1629972996 has 24 divisors (see below), whose sum is σ = 3805564224. Its totient is φ = 542996640.

The previous prime is 1629972989. The next prime is 1629972997. The reversal of 1629972996 is 6992799261.

It is not an unprimeable number, because it can be changed into a prime (1629972997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19800 + ... + 60431.

It is an arithmetic number, because the mean of its divisors is an integer number (158565176).

Almost surely, 2^1629972996 is an apocalyptic number.

It is an amenable number.

1629972996 is an abundant number, since it is smaller than the sum of its proper divisors (2175591228).

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

1629972996 is a wasteful number, since it uses less digits than its factorization.

1629972996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81931 (or 81929 counting only the distinct ones).

The product of its digits is 6613488, while the sum is 60.

The square root of 1629972996 is about 40372.9240457017. The cubic root of 1629972996 is about 1176.8654228352.

The spelling of 1629972996 in words is "one billion, six hundred twenty-nine million, nine hundred seventy-two thousand, nine hundred ninety-six".