1662623372 has 24 divisors (see below), whose sum is σ = 3005140992. Its totient is φ = 804042000.

The previous prime is 1662623323. The next prime is 1662623411. The reversal of 1662623372 is 2733262661.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351173 + ... + 355875.

It is an arithmetic number, because the mean of its divisors is an integer number (125214208).

Almost surely, 2^1662623372 is an apocalyptic number.

It is an amenable number.

1662623372 is a deficient number, since it is larger than the sum of its proper divisors (1342517620).

1662623372 is a wasteful number, since it uses less digits than its factorization.

1662623372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7589 (or 7587 counting only the distinct ones).

The product of its digits is 108864, while the sum is 38.

The square root of 1662623372 is about 40775.2789322158. The cubic root of 1662623372 is about 1184.6715539493.

The spelling of 1662623372 in words is "one billion, six hundred sixty-two million, six hundred twenty-three thousand, three hundred seventy-two".