1622663553 has 32 divisors (see below), whose sum is σ = 2514672640. Its totient is φ = 911528640.

The previous prime is 1622663521. The next prime is 1622663557. The reversal of 1622663553 is 3553662261.

It is not a de Polignac number, because 1622663553 - 2⁵ = 1622663521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1622663557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 971403 + ... + 973071.

It is an arithmetic number, because the mean of its divisors is an integer number (78583520).

Almost surely, 2^1622663553 is an apocalyptic number.

It is an amenable number.

1622663553 is a deficient number, since it is larger than the sum of its proper divisors (892009087).

1622663553 is a wasteful number, since it uses less digits than its factorization.

1622663553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437.

The product of its digits is 194400, while the sum is 39.

The square root of 1622663553 is about 40282.2982586644. The cubic root of 1622663553 is about 1175.1036101181.

The spelling of 1622663553 in words is "one billion, six hundred twenty-two million, six hundred sixty-three thousand, five hundred fifty-three".