1057630819 has 4 divisors (see below), whose sum is σ = 1208720944. Its totient is φ = 906540696.

The previous prime is 1057630811. The next prime is 1057630831. The reversal of 1057630819 is 9180367501.

1057630819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9180367501 = 9839 ⋅933059.

It is a cyclic number.

It is not a de Polignac number, because 1057630819 - 2³ = 1057630811 is a prime.

It is a super-2 number, since 2×1057630819² = 2237165898597221522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1057630811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75545052 + ... + 75545065.

It is an arithmetic number, because the mean of its divisors is an integer number (302180236).

Almost surely, 2^1057630819 is an apocalyptic number.

1057630819 is a deficient number, since it is larger than the sum of its proper divisors (151090125).

1057630819 is an equidigital number, since it uses as much as digits as its factorization.

1057630819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151090124.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1057630819 is about 32521.2364309846. The cubic root of 1057630819 is about 1018.8526182451.

The spelling of 1057630819 in words is "one billion, fifty-seven million, six hundred thirty thousand, eight hundred nineteen".