Search a number
-
+
1664235163 = 12231360781
BaseRepresentation
bin110001100110010…
…0011011010011011
311021222112220110101
41203030203122123
511402021011123
6433050200231
756145523363
oct14314433233
94258486411
101664235163
11784465568
123a5423077
13206a36646
1411b0559a3
159b18baad
hex6332369b

1664235163 has 4 divisors (see below), whose sum is σ = 1665597168. Its totient is φ = 1662873160.

The previous prime is 1664235161. The next prime is 1664235193. The reversal of 1664235163 is 3615324661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1664235163 - 21 = 1664235161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1664235161) 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, 679168 + ... + 681613.

It is an arithmetic number, because the mean of its divisors is an integer number (416399292).

Almost surely, 21664235163 is an apocalyptic number.

1664235163 is a deficient number, since it is larger than the sum of its proper divisors (1362005).

1664235163 is a wasteful number, since it uses less digits than its factorization.

1664235163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362004.

The product of its digits is 77760, while the sum is 37.

The square root of 1664235163 is about 40795.0384605775. The cubic root of 1664235163 is about 1185.0542476071.

The spelling of 1664235163 in words is "one billion, six hundred sixty-four million, two hundred thirty-five thousand, one hundred sixty-three".

Divisors: 1 1223 1360781 1664235163