1057191802 has 4 divisors (see below), whose sum is σ = 1585787706. Its totient is φ = 528595900.

The previous prime is 1057191761. The next prime is 1057191887. The reversal of 1057191802 is 2081917501.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1023424081 + 33767721 = 31991^2 + 5811^2 .

It is a super-2 number, since 2×1057191802² = 2235309012432014408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264297949 + ... + 264297952.

Almost surely, 2^1057191802 is an apocalyptic number.

1057191802 is a deficient number, since it is larger than the sum of its proper divisors (528595904).

1057191802 is an equidigital number, since it uses as much as digits as its factorization.

1057191802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528595903.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 1057191802 is about 32514.4860331514. The cubic root of 1057191802 is about 1018.7116252774.

The spelling of 1057191802 in words is "one billion, fifty-seven million, one hundred ninety-one thousand, eight hundred two".