1057644745 has 8 divisors (see below), whose sum is σ = 1278305280. Its totient is φ = 840028080.

The previous prime is 1057644677. The next prime is 1057644773. The reversal of 1057644745 is 5474467501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1057644745 - 2⁷ = 1057644617 is a prime.

It is a super-2 number, since 2×1057644745² = 2237224813252230050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 760201 + ... + 761590.

It is an arithmetic number, because the mean of its divisors is an integer number (159788160).

Almost surely, 2^1057644745 is an apocalyptic number.

It is an amenable number.

1057644745 is a deficient number, since it is larger than the sum of its proper divisors (220660535).

1057644745 is a wasteful number, since it uses less digits than its factorization.

1057644745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521935.

The product of its (nonzero) digits is 470400, while the sum is 43.

The square root of 1057644745 is about 32521.4505365305. The cubic root of 1057644745 is about 1018.8570900259.

The spelling of 1057644745 in words is "one billion, fifty-seven million, six hundred forty-four thousand, seven hundred forty-five".