3629985931 has 16 divisors (see below), whose sum is σ = 4318594560. Its totient is φ = 3007573920.

The previous prime is 3629985917. The next prime is 3629985937. The reversal of 3629985931 is 1395899263.

It is a happy number.

It is not a de Polignac number, because 3629985931 - 2⁷ = 3629985803 is a prime.

It is a super-2 number, since 2×3629985931² = 26353595718515873522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3629985937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149365 + ... + 171958.

It is an arithmetic number, because the mean of its divisors is an integer number (269912160).

Almost surely, 2^3629985931 is an apocalyptic number.

3629985931 is a deficient number, since it is larger than the sum of its proper divisors (688608629).

3629985931 is a wasteful number, since it uses less digits than its factorization.

3629985931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321426.

The product of its digits is 3149280, while the sum is 55.

The square root of 3629985931 is about 60249.3645692633. The cubic root of 3629985931 is about 1536.8623825881.

The spelling of 3629985931 in words is "three billion, six hundred twenty-nine million, nine hundred eighty-five thousand, nine hundred thirty-one".