1057427009 has 16 divisors (see below), whose sum is σ = 1118499840. Its totient is φ = 998612160.

The previous prime is 1057426999. The next prime is 1057427017. The reversal of 1057427009 is 9007247501.

It is a cyclic number.

It is not a de Polignac number, because 1057427009 - 2⁸ = 1057426753 is a prime.

It is a super-2 number, since 2×1057427009² = 2236303758725372162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1057427009.

It is not an unprimeable number, because it can be changed into a prime (1057427099) 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, 148472 + ... + 155430.

It is an arithmetic number, because the mean of its divisors is an integer number (69906240).

Almost surely, 2^1057427009 is an apocalyptic number.

It is an amenable number.

1057427009 is a deficient number, since it is larger than the sum of its proper divisors (61072831).

1057427009 is an equidigital number, since it uses as much as digits as its factorization.

1057427009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7120.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 1057427009 is about 32518.1027890620. The cubic root of 1057427009 is about 1018.7871682827.

The spelling of 1057427009 in words is "one billion, fifty-seven million, four hundred twenty-seven thousand, nine".