1015662161 has 16 divisors (see below), whose sum is σ = 1106645328. Its totient is φ = 928512000.

The previous prime is 1015662149. The next prime is 1015662169. The reversal of 1015662161 is 1612665101.

It can be written as a sum of positive squares in 8 ways, for example, as 55591936 + 960070225 = 7456^2 + 30985^2 .

It is a cyclic number.

It is not a de Polignac number, because 1015662161 - 2⁶ = 1015662097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1015662169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85421 + ... + 96581.

It is an arithmetic number, because the mean of its divisors is an integer number (69165333).

Almost surely, 2^1015662161 is an apocalyptic number.

It is an amenable number.

1015662161 is a deficient number, since it is larger than the sum of its proper divisors (90983167).

1015662161 is a wasteful number, since it uses less digits than its factorization.

1015662161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 1015662161 is about 31869.4549843577. The cubic root of 1015662161 is about 1005.1936991236.

The spelling of 1015662161 in words is "one billion, fifteen million, six hundred sixty-two thousand, one hundred sixty-one".