1057189812 has 48 divisors (see below), whose sum is σ = 2985010560. Its totient is φ = 284285952.

The previous prime is 1057189769. The next prime is 1057189817. The reversal of 1057189812 is 2189817501.

It is a super-2 number, since 2×1057189812² = 2235300597193190688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057189817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368737 + ... + 371592.

It is an arithmetic number, because the mean of its divisors is an integer number (62187720).

Almost surely, 2^1057189812 is an apocalyptic number.

1057189812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1057189812 is an abundant number, since it is smaller than the sum of its proper divisors (1927820748).

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

1057189812 is a wasteful number, since it uses less digits than its factorization.

1057189812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740360 (or 740358 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 1057189812 is about 32514.4554313924. The cubic root of 1057189812 is about 1018.7109860880.

The spelling of 1057189812 in words is "one billion, fifty-seven million, one hundred eighty-nine thousand, eight hundred twelve".