1013156560 has 40 divisors (see below), whose sum is σ = 2536790760. Its totient is φ = 374088192.

The previous prime is 1013156537. The next prime is 1013156563. The reversal of 1013156560 is 656513101.

It can be written as a sum of positive squares in 4 ways, for example, as 898704 + 1012257856 = 948^2 + 31816^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013156563) 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, 486055 + ... + 488134.

It is an arithmetic number, because the mean of its divisors is an integer number (63419769).

Almost surely, 2^1013156560 is an apocalyptic number.

1013156560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013156560 is an abundant number, since it is smaller than the sum of its proper divisors (1523634200).

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

1013156560 is a wasteful number, since it uses less digits than its factorization.

1013156560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974215 (or 974209 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 1013156560 is about 31830.1203265083. The cubic root of 1013156560 is about 1004.3664265694.

Adding to 1013156560 its reverse (656513101), we get a palindrome (1669669661).

The spelling of 1013156560 in words is "one billion, thirteen million, one hundred fifty-six thousand, five hundred sixty".