1044556645 has 32 divisors (see below), whose sum is σ = 1413396864. Its totient is φ = 734496000.

The previous prime is 1044556627. The next prime is 1044556663. The reversal of 1044556645 is 5466554401.

It is an interprime number because it is at equal distance from previous prime (1044556627) and next prime (1044556663).

It is not a de Polignac number, because 1044556645 - 2²¹ = 1042459493 is a prime.

It is a super-2 number, since 2×1044556645² = 2182197169227312050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1044556598 and 1044556607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236679 + ... + 241051.

It is an arithmetic number, because the mean of its divisors is an integer number (44168652).

Almost surely, 2^1044556645 is an apocalyptic number.

It is an amenable number.

1044556645 is a deficient number, since it is larger than the sum of its proper divisors (368840219).

1044556645 is a wasteful number, since it uses less digits than its factorization.

1044556645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533.

The product of its (nonzero) digits is 288000, while the sum is 40.

The square root of 1044556645 is about 32319.6015600440. The cubic root of 1044556645 is about 1014.6369300093.

The spelling of 1044556645 in words is "one billion, forty-four million, five hundred fifty-six thousand, six hundred forty-five".