3751491720 has 32 divisors (see below), whose sum is σ = 11254475520. Its totient is φ = 1000397760.

The previous prime is 3751491719. The next prime is 3751491761. The reversal of 3751491720 is 271941573.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15631096 + ... + 15631335.

It is an arithmetic number, because the mean of its divisors is an integer number (351702360).

Almost surely, 2^3751491720 is an apocalyptic number.

3751491720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3751491720 is an abundant number, since it is smaller than the sum of its proper divisors (7502983800).

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

3751491720 is a wasteful number, since it uses less digits than its factorization.

3751491720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31262445 (or 31262441 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 3751491720 is about 61249.4222013563. The cubic root of 3751491720 is about 1553.8222310394.

The spelling of 3751491720 in words is "three billion, seven hundred fifty-one million, four hundred ninety-one thousand, seven hundred twenty".