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1230863155 = 51714480743
BaseRepresentation
bin100100101011101…
…0111101100110011
310011210002022211021
41021113113230303
510010100110110
6322045400311
742334110214
oct11127275463
93153068737
101230863155
11581876785
122a4269097
1316800c2c2
14b968540b
15730d52da
hex495d7b33

1230863155 has 8 divisors (see below), whose sum is σ = 1563920352. Its totient is φ = 926767488.

The previous prime is 1230863141. The next prime is 1230863177. The reversal of 1230863155 is 5513680321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1230863155 - 29 = 1230862643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1230863155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7240287 + ... + 7240456.

It is an arithmetic number, because the mean of its divisors is an integer number (195490044).

Almost surely, 21230863155 is an apocalyptic number.

1230863155 is a deficient number, since it is larger than the sum of its proper divisors (333057197).

1230863155 is a wasteful number, since it uses less digits than its factorization.

1230863155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480765.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 1230863155 is about 35083.6593729902. The cubic root of 1230863155 is about 1071.6918397835.

The spelling of 1230863155 in words is "one billion, two hundred thirty million, eight hundred sixty-three thousand, one hundred fifty-five".

Divisors: 1 5 17 85 14480743 72403715 246172631 1230863155