1157474194 has 4 divisors (see below), whose sum is σ = 1736211294. Its totient is φ = 578737096.

The previous prime is 1157474191. The next prime is 1157474209. The reversal of 1157474194 is 4914747511.

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., 1052678025 + 104796169 = 32445^2 + 10237^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1157474194.

It is not an unprimeable number, because it can be changed into a prime (1157474191) by changing a digit.

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, 289368547 + ... + 289368550.

Almost surely, 2^1157474194 is an apocalyptic number.

1157474194 is a deficient number, since it is larger than the sum of its proper divisors (578737100).

1157474194 is an equidigital number, since it uses as much as digits as its factorization.

1157474194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578737099.

The product of its digits is 141120, while the sum is 43.

The square root of 1157474194 is about 34021.6724162702. The cubic root of 1157474194 is about 1049.9544028574.

The spelling of 1157474194 in words is "one billion, one hundred fifty-seven million, four hundred seventy-four thousand, one hundred ninety-four".