1057380947 has 12 divisors (see below), whose sum is σ = 1232488656. Its totient is φ = 904503600.

The previous prime is 1057380937. The next prime is 1057380959. The reversal of 1057380947 is 7490837501.

It is not a de Polignac number, because 1057380947 - 2¹² = 1057376851 is a prime.

It is a super-2 number, since 2×1057380947² = 2236108934157233618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1057380898 and 1057380907.

It is not an unprimeable number, because it can be changed into a prime (1057380937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3197 + ... + 46097.

It is an arithmetic number, because the mean of its divisors is an integer number (102707388).

Almost surely, 2^1057380947 is an apocalyptic number.

1057380947 is a deficient number, since it is larger than the sum of its proper divisors (175107709).

1057380947 is an equidigital number, since it uses as much as digits as its factorization.

1057380947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43418 (or 43411 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 1057380947 is about 32517.3945296975. The cubic root of 1057380947 is about 1018.7723751243.

The spelling of 1057380947 in words is "one billion, fifty-seven million, three hundred eighty thousand, nine hundred forty-seven".