3972974187 has 48 divisors (see below), whose sum is σ = 6569541888. Its totient is φ = 2091173760.

The previous prime is 3972974183. The next prime is 3972974221. The reversal of 3972974187 is 7814792793.

It is not a de Polignac number, because 3972974187 - 2² = 3972974183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3972974183) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2281137 + ... + 2282877.

It is an arithmetic number, because the mean of its divisors is an integer number (136865456).

Almost surely, 2^3972974187 is an apocalyptic number.

3972974187 is a deficient number, since it is larger than the sum of its proper divisors (2596567701).

3972974187 is a wasteful number, since it uses less digits than its factorization.

3972974187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420 (or 2407 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 57.

The square root of 3972974187 is about 63031.5332750204. The cubic root of 3972974187 is about 1583.8179030192.

The spelling of 3972974187 in words is "three billion, nine hundred seventy-two million, nine hundred seventy-four thousand, one hundred eighty-seven".