3681390972 has 36 divisors (see below), whose sum is σ = 9992348520. Its totient is φ = 1051825824.

The previous prime is 3681390941. The next prime is 3681390983. The reversal of 3681390972 is 2790931863.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3129847 + ... + 3131022.

Almost surely, 2^3681390972 is an apocalyptic number.

It is an amenable number.

3681390972 is an abundant number, since it is smaller than the sum of its proper divisors (6310957548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3681390972 is a wasteful number, since it uses less digits than its factorization.

3681390972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260890 (or 6260881 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 3681390972 is about 60674.4672164495. The cubic root of 3681390972 is about 1544.0830218139.

The spelling of 3681390972 in words is "three billion, six hundred eighty-one million, three hundred ninety thousand, nine hundred seventy-two".