1627640164 has 12 divisors (see below), whose sum is σ = 2849742000. Its totient is φ = 813428168.

The previous prime is 1627640143. The next prime is 1627640173. The reversal of 1627640164 is 4610467261.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88534 + ... + 105325.

It is an arithmetic number, because the mean of its divisors is an integer number (237478500).

Almost surely, 2^1627640164 is an apocalyptic number.

It is an amenable number.

1627640164 is a deficient number, since it is larger than the sum of its proper divisors (1222101836).

1627640164 is a wasteful number, since it uses less digits than its factorization.

1627640164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195962 (or 195960 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1627640164 is about 40344.0226551592. The cubic root of 1627640164 is about 1176.3037079830.

The spelling of 1627640164 in words is "one billion, six hundred twenty-seven million, six hundred forty thousand, one hundred sixty-four".