1057638823 has 2 divisors, whose sum is σ = 1057638824. Its totient is φ = 1057638822.

The previous prime is 1057638809. The next prime is 1057638839. The reversal of 1057638823 is 3288367501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1057638823 - 2¹³ = 1057630631 is a prime.

It is a super-2 number, since 2×1057638823² = 2237199759833650658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057638823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1057638853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528819411 + 528819412.

It is an arithmetic number, because the mean of its divisors is an integer number (528819412).

Almost surely, 2^1057638823 is an apocalyptic number.

1057638823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057638823 is an equidigital number, since it uses as much as digits as its factorization.

1057638823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 1057638823 is about 32521.3594888037. The cubic root of 1057638823 is about 1018.8551884160.

The spelling of 1057638823 in words is "one billion, fifty-seven million, six hundred thirty-eight thousand, eight hundred twenty-three".