3633431997 has 16 divisors (see below), whose sum is σ = 5491828160. Its totient is φ = 2118275712.

The previous prime is 3633431957. The next prime is 3633432001. The reversal of 3633431997 is 7991343363.

It is not a de Polignac number, because 3633431997 - 2⁶ = 3633431933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3633431957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2450968 + ... + 2452449.

It is an arithmetic number, because the mean of its divisors is an integer number (343239260).

Almost surely, 2^3633431997 is an apocalyptic number.

It is an amenable number.

3633431997 is a deficient number, since it is larger than the sum of its proper divisors (1858396163).

3633431997 is a wasteful number, since it uses less digits than its factorization.

3633431997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4903452.

The product of its digits is 1102248, while the sum is 48.

The square root of 3633431997 is about 60277.9561448462. The cubic root of 3633431997 is about 1537.3485602444.

The spelling of 3633431997 in words is "three billion, six hundred thirty-three million, four hundred thirty-one thousand, nine hundred ninety-seven".