3947525130 has 32 divisors (see below), whose sum is σ = 9694390464. Its totient is φ = 1028192256.

The previous prime is 3947525123. The next prime is 3947525189. The reversal of 3947525130 is 315257493.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1528759 + ... + 1531338.

It is an arithmetic number, because the mean of its divisors is an integer number (302949702).

Almost surely, 2^3947525130 is an apocalyptic number.

3947525130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3947525130 is an abundant number, since it is smaller than the sum of its proper divisors (5746865334).

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

3947525130 is a wasteful number, since it uses less digits than its factorization.

3947525130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060150.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 3947525130 is about 62829.3333563233. Note that the first 4 decimals coincide. The cubic root of 3947525130 is about 1580.4289186959.

The spelling of 3947525130 in words is "three billion, nine hundred forty-seven million, five hundred twenty-five thousand, one hundred thirty".