3646991902 has 8 divisors (see below), whose sum is σ = 5603914512. Its totient is φ = 1779020400.

The previous prime is 3646991897. The next prime is 3646991977. The reversal of 3646991902 is 2091996463.

3646991902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22237674 + ... + 22237837.

It is an arithmetic number, because the mean of its divisors is an integer number (700489314).

Almost surely, 2^3646991902 is an apocalyptic number.

3646991902 is a deficient number, since it is larger than the sum of its proper divisors (1956922610).

3646991902 is a wasteful number, since it uses less digits than its factorization.

3646991902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44475554.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 3646991902 is about 60390.3295404157. The cubic root of 3646991902 is about 1539.2586387782.

The spelling of 3646991902 in words is "three billion, six hundred forty-six million, nine hundred ninety-one thousand, nine hundred two".