1057438988 has 6 divisors (see below), whose sum is σ = 1850518236. Its totient is φ = 528719492.

The previous prime is 1057438979. The next prime is 1057439011. The reversal of 1057438988 is 8898347501.

It is a super-2 number, since 2×1057438988² = 2236354426684928288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132179870 + ... + 132179877.

It is an arithmetic number, because the mean of its divisors is an integer number (308419706).

Almost surely, 2^1057438988 is an apocalyptic number.

It is an amenable number.

1057438988 is a deficient number, since it is larger than the sum of its proper divisors (793079248).

1057438988 is a wasteful number, since it uses less digits than its factorization.

1057438988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264359751 (or 264359749 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 1057438988 is about 32518.2869782527. The cubic root of 1057438988 is about 1018.7910153585.

The spelling of 1057438988 in words is "one billion, fifty-seven million, four hundred thirty-eight thousand, nine hundred eighty-eight".