1622161564 has 12 divisors (see below), whose sum is σ = 2839780944. Its totient is φ = 810795584.

The previous prime is 1622161547. The next prime is 1622161579. The reversal of 1622161564 is 4651612261.

It is a congruent number.

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, 58237 + ... + 81460.

It is an arithmetic number, because the mean of its divisors is an integer number (236648412).

Almost surely, 2^1622161564 is an apocalyptic number.

It is an amenable number.

1622161564 is a deficient number, since it is larger than the sum of its proper divisors (1217619380).

1622161564 is a wasteful number, since it uses less digits than its factorization.

1622161564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142604 (or 142602 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 1622161564 is about 40276.0668884140. The cubic root of 1622161564 is about 1174.9824205005.

The spelling of 1622161564 in words is "one billion, six hundred twenty-two million, one hundred sixty-one thousand, five hundred sixty-four".