1629641272 has 16 divisors (see below), whose sum is σ = 3492088560. Its totient is φ = 698417664.

The previous prime is 1629641261. The next prime is 1629641281. The reversal of 1629641272 is 2721469261.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14550313 + ... + 14550424.

It is an arithmetic number, because the mean of its divisors is an integer number (218255535).

Almost surely, 2^1629641272 is an apocalyptic number.

It is an amenable number.

1629641272 is an abundant number, since it is smaller than the sum of its proper divisors (1862447288).

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

1629641272 is a wasteful number, since it uses less digits than its factorization.

1629641272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29100750 (or 29100746 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 1629641272 is about 40368.8155882731. The cubic root of 1629641272 is about 1176.7855808187.

The spelling of 1629641272 in words is "one billion, six hundred twenty-nine million, six hundred forty-one thousand, two hundred seventy-two".