3187981380 has 48 divisors (see below), whose sum is σ = 8929085760. Its totient is φ = 849867648.

The previous prime is 3187981361. The next prime is 3187981387. The reversal of 3187981380 is 831897813.

It is not an unprimeable number, because it can be changed into a prime (3187981387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264526 + ... + 276314.

It is an arithmetic number, because the mean of its divisors is an integer number (186022620).

Almost surely, 2^3187981380 is an apocalyptic number.

3187981380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3187981380 is an abundant number, since it is smaller than the sum of its proper divisors (5741104380).

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

3187981380 is a wasteful number, since it uses less digits than its factorization.

3187981380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16308 (or 16306 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 3187981380 is about 56462.2119651719. The cubic root of 3187981380 is about 1471.7654110103.

The spelling of 3187981380 in words is "three billion, one hundred eighty-seven million, nine hundred eighty-one thousand, three hundred eighty".