3639742031 has 8 divisors (see below), whose sum is σ = 3677793024. Its totient is φ = 3601889280.

The previous prime is 3639742021. The next prime is 3639742079. The reversal of 3639742031 is 1302479363.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3639742031 - 2¹⁴ = 3639725647 is a prime.

It is a super-2 number, since 2×3639742031² = 26495444104456009922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639742021) 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 7 ways as a sum of consecutive naturals, for example, 12506 + ... + 86231.

It is an arithmetic number, because the mean of its divisors is an integer number (459724128).

Almost surely, 2^3639742031 is an apocalyptic number.

3639742031 is a deficient number, since it is larger than the sum of its proper divisors (38050993).

3639742031 is a wasteful number, since it uses less digits than its factorization.

3639742031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99121.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 3639742031 is about 60330.2745808437. The cubic root of 3639742031 is about 1538.2379958604.

The spelling of 3639742031 in words is "three billion, six hundred thirty-nine million, seven hundred forty-two thousand, thirty-one".