1015166920 has 32 divisors (see below), whose sum is σ = 2357809920. Its totient is φ = 392967360.

The previous prime is 1015166909. The next prime is 1015166923. The reversal of 1015166920 is 296615101.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (1015166923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408102 + ... + 410581.

It is an arithmetic number, because the mean of its divisors is an integer number (73681560).

Almost surely, 2^1015166920 is an apocalyptic number.

1015166920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1015166920 is an abundant number, since it is smaller than the sum of its proper divisors (1342643000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1015166920 is a wasteful number, since it uses less digits than its factorization.

1015166920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818725 (or 818721 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 1015166920 is about 31861.6841990501. The cubic root of 1015166920 is about 1005.0302937165.

The spelling of 1015166920 in words is "one billion, fifteen million, one hundred sixty-six thousand, nine hundred twenty".