1662386674 has 32 divisors (see below), whose sum is σ = 2721899376. Its totient is φ = 756883200.

The previous prime is 1662386659. The next prime is 1662386681. The reversal of 1662386674 is 4766832661.

It can be written as a sum of positive squares in 8 ways, for example, as 141776649 + 1520610025 = 11907^2 + 38995^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 831444 + ... + 833440.

Almost surely, 2^1662386674 is an apocalyptic number.

1662386674 is a deficient number, since it is larger than the sum of its proper divisors (1059512702).

1662386674 is a wasteful number, since it uses less digits than its factorization.

1662386674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430.

The product of its digits is 1741824, while the sum is 49.

The square root of 1662386674 is about 40772.3763594912. The cubic root of 1662386674 is about 1184.6153330196.

The spelling of 1662386674 in words is "one billion, six hundred sixty-two million, three hundred eighty-six thousand, six hundred seventy-four".