1057804478 has 4 divisors (see below), whose sum is σ = 1586706720. Its totient is φ = 528902238.

The previous prime is 1057804441. The next prime is 1057804483. The reversal of 1057804478 is 8744087501.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1057804478² = 2237900627353704968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264451118 + ... + 264451121.

It is an arithmetic number, because the mean of its divisors is an integer number (396676680).

Almost surely, 2^1057804478 is an apocalyptic number.

1057804478 is a deficient number, since it is larger than the sum of its proper divisors (528902242).

1057804478 is an equidigital number, since it uses as much as digits as its factorization.

1057804478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528902241.

The product of its (nonzero) digits is 250880, while the sum is 44.

The square root of 1057804478 is about 32523.9062537082. The cubic root of 1057804478 is about 1018.9083791151.

The spelling of 1057804478 in words is "one billion, fifty-seven million, eight hundred four thousand, four hundred seventy-eight".