1396521874 has 16 divisors (see below), whose sum is σ = 2286307296. Its totient is φ = 634480000.

The previous prime is 1396521853. The next prime is 1396521887. The reversal of 1396521874 is 4781256931.

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 in 7 ways as a sum of consecutive naturals, for example, 35874 + ... + 63874.

It is an arithmetic number, because the mean of its divisors is an integer number (142894206).

Almost surely, 2^1396521874 is an apocalyptic number.

1396521874 is a deficient number, since it is larger than the sum of its proper divisors (889785422).

1396521874 is a wasteful number, since it uses less digits than its factorization.

1396521874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30281.

The product of its digits is 362880, while the sum is 46.

The square root of 1396521874 is about 37370.0665506499. The cubic root of 1396521874 is about 1117.7617592870.

The spelling of 1396521874 in words is "one billion, three hundred ninety-six million, five hundred twenty-one thousand, eight hundred seventy-four".