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1230763169 = 4312855599
BaseRepresentation
bin100100101011011…
…1111010010100001
310011202220020200002
41021112333102201
510010033410134
6322043305345
742333212546
oct11126772241
93152806602
101230763169
11581808649
122a421b255
13167ca593c
14b965abcd
15730b587e
hex495bf4a1

1230763169 has 4 divisors (see below), whose sum is σ = 1233619200. Its totient is φ = 1227907140.

The previous prime is 1230763159. The next prime is 1230763217. The reversal of 1230763169 is 9613670321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9613670321 = 9923968827.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1230763169 is a prime.

It is a super-2 number, since 2×12307631692 = 3029555956333845122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230763139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427369 + ... + 1428230.

It is an arithmetic number, because the mean of its divisors is an integer number (308404800).

Almost surely, 21230763169 is an apocalyptic number.

It is an amenable number.

1230763169 is a deficient number, since it is larger than the sum of its proper divisors (2856031).

1230763169 is an equidigital number, since it uses as much as digits as its factorization.

1230763169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2856030.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 1230763169 is about 35082.2343786709. The cubic root of 1230763169 is about 1071.6628202884.

The spelling of 1230763169 in words is "one billion, two hundred thirty million, seven hundred sixty-three thousand, one hundred sixty-nine".

Divisors: 1 431 2855599 1230763169