1631622552 has 64 divisors (see below), whose sum is σ = 4775500800. Its totient is φ = 454805760.

The previous prime is 1631622541. The next prime is 1631622557. The reversal of 1631622552 is 2552261361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631622557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111552 + ... + 125327.

It is an arithmetic number, because the mean of its divisors is an integer number (74617200).

Almost surely, 2^1631622552 is an apocalyptic number.

1631622552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1631622552 is an abundant number, since it is smaller than the sum of its proper divisors (3143878248).

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

1631622552 is a wasteful number, since it uses less digits than its factorization.

1631622552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236936 (or 236932 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 1631622552 is about 40393.3478681825. The cubic root of 1631622552 is about 1177.2622905370.

The spelling of 1631622552 in words is "one billion, six hundred thirty-one million, six hundred twenty-two thousand, five hundred fifty-two".