1623053620 has 24 divisors (see below), whose sum is σ = 3409172424. Its totient is φ = 649076736.

The previous prime is 1623053617. The next prime is 1623053683. The reversal of 1623053620 is 263503261.

It can be written as a sum of positive squares in 4 ways, for example, as 13278736 + 1609774884 = 3644^2 + 40122^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159732 + ... + 169588.

It is an arithmetic number, because the mean of its divisors is an integer number (142048851).

Almost surely, 2^1623053620 is an apocalyptic number.

1623053620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1623053620 is an abundant number, since it is smaller than the sum of its proper divisors (1786118804).

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

1623053620 is a wasteful number, since it uses less digits than its factorization.

1623053620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18099 (or 18097 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 1623053620 is about 40287.1396353725. The cubic root of 1623053620 is about 1175.1977623974.

Adding to 1623053620 its reverse (263503261), we get a palindrome (1886556881).

The spelling of 1623053620 in words is "one billion, six hundred twenty-three million, fifty-three thousand, six hundred twenty".