1622555164 has 12 divisors (see below), whose sum is σ = 2839785088. Its totient is φ = 811188000.

The previous prime is 1622555161. The next prime is 1622555239. The reversal of 1622555164 is 4615552261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622555161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34309 + ... + 66499.

Almost surely, 2^1622555164 is an apocalyptic number.

It is an amenable number.

1622555164 is a deficient number, since it is larger than the sum of its proper divisors (1217229924).

1622555164 is a wasteful number, since it uses less digits than its factorization.

1622555164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44796 (or 44794 counting only the distinct ones).

The product of its digits is 72000, while the sum is 37.

The square root of 1622555164 is about 40280.9528685705. The cubic root of 1622555164 is about 1175.0774450840.

The spelling of 1622555164 in words is "one billion, six hundred twenty-two million, five hundred fifty-five thousand, one hundred sixty-four".