3685770731 has 8 divisors (see below), whose sum is σ = 3966558624. Its totient is φ = 3412091520.

The previous prime is 3685770713. The next prime is 3685770733. The reversal of 3685770731 is 1370775863.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3685770731 is a prime.

It is a super-2 number, since 2×3685770731² = 27169811762992548722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3685770733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1776095 + ... + 1778168.

It is an arithmetic number, because the mean of its divisors is an integer number (495819828).

Almost surely, 2^3685770731 is an apocalyptic number.

3685770731 is a deficient number, since it is larger than the sum of its proper divisors (280787893).

3685770731 is a wasteful number, since it uses less digits than its factorization.

3685770731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3554341.

The product of its (nonzero) digits is 740880, while the sum is 47.

The square root of 3685770731 is about 60710.5487621385. The cubic root of 3685770731 is about 1544.6951121409.

The spelling of 3685770731 in words is "three billion, six hundred eighty-five million, seven hundred seventy thousand, seven hundred thirty-one".