1620473676 has 48 divisors (see below), whose sum is σ = 3818707200. Its totient is φ = 534808512.

The previous prime is 1620473669. The next prime is 1620473693. The reversal of 1620473676 is 6763740261.

It is a happy number.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 731146 + ... + 733358.

It is an arithmetic number, because the mean of its divisors is an integer number (79556400).

Almost surely, 2^1620473676 is an apocalyptic number.

It is an amenable number.

1620473676 is an abundant number, since it is smaller than the sum of its proper divisors (2198233524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1620473676 is a wasteful number, since it uses less digits than its factorization.

1620473676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798 (or 2796 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

The square root of 1620473676 is about 40255.1074523470. The cubic root of 1620473676 is about 1174.5747490259.

The spelling of 1620473676 in words is "one billion, six hundred twenty million, four hundred seventy-three thousand, six hundred seventy-six".