3690491631 has 32 divisors (see below), whose sum is σ = 5346129600. Its totient is φ = 2255339520.

The previous prime is 3690491617. The next prime is 3690491633. The reversal of 3690491631 is 1361940963.

It is not a de Polignac number, because 3690491631 - 2¹⁴ = 3690475247 is a prime.

It is a super-2 number, since 2×3690491631² = 27239456956962080322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3690491633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1732375 + ... + 1734503.

It is an arithmetic number, because the mean of its divisors is an integer number (167066550).

Almost surely, 2^3690491631 is an apocalyptic number.

3690491631 is a deficient number, since it is larger than the sum of its proper divisors (1655637969).

3690491631 is a wasteful number, since it uses less digits than its factorization.

3690491631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 3690491631 is about 60749.4167132492. The cubic root of 3690491631 is about 1545.3543356289.

The spelling of 3690491631 in words is "three billion, six hundred ninety million, four hundred ninety-one thousand, six hundred thirty-one".