1623132689 has 4 divisors (see below), whose sum is σ = 1675491840. Its totient is φ = 1570773540.

The previous prime is 1623132671. The next prime is 1623132691. The reversal of 1623132689 is 9862313261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1623132689 is a prime.

It is a super-2 number, since 2×1623132689² = 5269119452200741442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623132629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26179529 + ... + 26179590.

It is an arithmetic number, because the mean of its divisors is an integer number (418872960).

Almost surely, 2^1623132689 is an apocalyptic number.

It is an amenable number.

1623132689 is a deficient number, since it is larger than the sum of its proper divisors (52359151).

1623132689 is an equidigital number, since it uses as much as digits as its factorization.

1623132689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52359150.

The product of its digits is 93312, while the sum is 41.

The square root of 1623132689 is about 40288.1209415381. The cubic root of 1623132689 is about 1175.2168458094.

The spelling of 1623132689 in words is "one billion, six hundred twenty-three million, one hundred thirty-two thousand, six hundred eighty-nine".