3728086631 has 8 divisors (see below), whose sum is σ = 3794904960. Its totient is φ = 3661389432.

The previous prime is 3728086601. The next prime is 3728086639. The reversal of 3728086631 is 1366808273.

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

It is a de Polignac number, because none of the positive numbers 2^k-3728086631 is a prime.

It is a super-2 number, since 2×3728086631² = 27797259856481860322, 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 (3728086639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32996 + ... + 92438.

It is an arithmetic number, because the mean of its divisors is an integer number (474363120).

Almost surely, 2^3728086631 is an apocalyptic number.

3728086631 is a deficient number, since it is larger than the sum of its proper divisors (66818329).

3728086631 is a wasteful number, since it uses less digits than its factorization.

3728086631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60565.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 3728086631 is about 61058.0595089625. The cubic root of 3728086631 is about 1550.5841199083.

The spelling of 3728086631 in words is "three billion, seven hundred twenty-eight million, eighty-six thousand, six hundred thirty-one".