1057646488 has 8 divisors (see below), whose sum is σ = 1983087180. Its totient is φ = 528823240.

The previous prime is 1057646479. The next prime is 1057646497. The reversal of 1057646488 is 8846467501.

It is an interprime number because it is at equal distance from previous prime (1057646479) and next prime (1057646497).

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1057646488² = 2237232187157468288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66102898 + ... + 66102913.

Almost surely, 2^1057646488 is an apocalyptic number.

It is an amenable number.

1057646488 is a deficient number, since it is larger than the sum of its proper divisors (925440692).

1057646488 is a wasteful number, since it uses less digits than its factorization.

1057646488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132205817 (or 132205813 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 49.

The square root of 1057646488 is about 32521.4773342172. The cubic root of 1057646488 is about 1018.8576497182.

The spelling of 1057646488 in words is "one billion, fifty-seven million, six hundred forty-six thousand, four hundred eighty-eight".