1057636845 has 28 divisors (see below), whose sum is σ = 1902882396. Its totient is φ = 564071040.

The previous prime is 1057636837. The next prime is 1057636859. The reversal of 1057636845 is 5486367501.

1057636845 is a `hidden beast` number, since 1 + 0 + 5 + 7 + 636 + 8 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 247779081 + 809857764 = 15741^2 + 28458^2 .

It is not a de Polignac number, because 1057636845 - 2³ = 1057636837 is a prime.

It is a super-2 number, since 2×1057636845² = 2237191391803108050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1057636845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 141436 + ... + 148725.

Almost surely, 2^1057636845 is an apocalyptic number.

1057636845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1057636845 is a deficient number, since it is larger than the sum of its proper divisors (845245551).

1057636845 is an frugal number, since it uses more digits than its factorization.

1057636845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290184 (or 290169 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 1057636845 is about 32521.3290780066. The cubic root of 1057636845 is about 1018.8545532601.

The spelling of 1057636845 in words is "one billion, fifty-seven million, six hundred thirty-six thousand, eight hundred forty-five".