1015978965 has 32 divisors (see below), whose sum is σ = 1683956736. Its totient is φ = 522516480.

The previous prime is 1015978933. The next prime is 1015978969. The reversal of 1015978965 is 5698795101.

It is not a de Polignac number, because 1015978965 - 2⁵ = 1015978933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015978969) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132517 + ... + 139973.

It is an arithmetic number, because the mean of its divisors is an integer number (52623648).

Almost surely, 2^1015978965 is an apocalyptic number.

1015978965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1015978965 is a deficient number, since it is larger than the sum of its proper divisors (667977771).

1015978965 is a wasteful number, since it uses less digits than its factorization.

1015978965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7789.

The product of its (nonzero) digits is 680400, while the sum is 51.

The square root of 1015978965 is about 31874.4249359890. The cubic root of 1015978965 is about 1005.2982011560.

The spelling of 1015978965 in words is "one billion, fifteen million, nine hundred seventy-eight thousand, nine hundred sixty-five".