1623161631 has 32 divisors (see below), whose sum is σ = 2703436288. Its totient is φ = 843384960.

The previous prime is 1623161629. The next prime is 1623161641. The reversal of 1623161631 is 1361613261.

It is not a de Polignac number, because 1623161631 - 2¹ = 1623161629 is a prime.

It is a super-2 number, since 2×1623161631² = 5269307360701160322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623161641) 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, 26080 + ... + 62661.

It is an arithmetic number, because the mean of its divisors is an integer number (84482384).

Almost surely, 2^1623161631 is an apocalyptic number.

1623161631 is a deficient number, since it is larger than the sum of its proper divisors (1080274657).

1623161631 is a wasteful number, since it uses less digits than its factorization.

1623161631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88831.

The product of its digits is 3888, while the sum is 30.

The square root of 1623161631 is about 40288.4801276990. The cubic root of 1623161631 is about 1175.2238308460.

Adding to 1623161631 its reverse (1361613261), we get a palindrome (2984774892).

The spelling of 1623161631 in words is "one billion, six hundred twenty-three million, one hundred sixty-one thousand, six hundred thirty-one".