3649131320 has 32 divisors (see below), whose sum is σ = 8216380800. Its totient is φ = 1458615168.

The previous prime is 3649131319. The next prime is 3649131337. The reversal of 3649131320 is 231319463.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25862 + ... + 89258.

It is an arithmetic number, because the mean of its divisors is an integer number (256761900).

Almost surely, 2^3649131320 is an apocalyptic number.

It is an amenable number.

3649131320 is an abundant number, since it is smaller than the sum of its proper divisors (4567249480).

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

3649131320 is a wasteful number, since it uses less digits than its factorization.

3649131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64847 (or 64843 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 3649131320 is about 60408.0401933385. The cubic root of 3649131320 is about 1539.5595693346.

The spelling of 3649131320 in words is "three billion, six hundred forty-nine million, one hundred thirty-one thousand, three hundred twenty".