1040465556 has 36 divisors (see below), whose sum is σ = 2832379732. Its totient is φ = 320143104.

The previous prime is 1040465537. The next prime is 1040465557. The reversal of 1040465556 is 6555640401.

1040465556 is a `hidden beast` number, since 1 + 0 + 40 + 4 + 65 + 556 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 249956100 + 790509456 = 15810^2 + 28116^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1040465556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040465557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1111141 + ... + 1112076.

Almost surely, 2^1040465556 is an apocalyptic number.

It is an amenable number.

1040465556 is an abundant number, since it is smaller than the sum of its proper divisors (1791914176).

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

1040465556 is a wasteful number, since it uses less digits than its factorization.

1040465556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2223240 (or 2223235 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 1040465556 is about 32256.2483249370. The cubic root of 1040465556 is about 1013.3105615362.

The spelling of 1040465556 in words is "one billion, forty million, four hundred sixty-five thousand, five hundred fifty-six".