3948188131 has 4 divisors (see below), whose sum is σ = 3948315264. Its totient is φ = 3948061000.

The previous prime is 3948188129. The next prime is 3948188149. The reversal of 3948188131 is 1318818493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1318818493 = 163 ⋅8090911.

It is a cyclic number.

It is not a de Polignac number, because 3948188131 - 2¹ = 3948188129 is a prime.

It is a super-2 number, since 2×3948188131² = 31176379035538546322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3948188161) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17361 + ... + 90541.

It is an arithmetic number, because the mean of its divisors is an integer number (987078816).

Almost surely, 2^3948188131 is an apocalyptic number.

3948188131 is a deficient number, since it is larger than the sum of its proper divisors (127133).

3948188131 is an equidigital number, since it uses as much as digits as its factorization.

3948188131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127132.

The product of its digits is 165888, while the sum is 46.

The square root of 3948188131 is about 62834.6093407129. The cubic root of 3948188131 is about 1580.5173933108.

The spelling of 3948188131 in words is "three billion, nine hundred forty-eight million, one hundred eighty-eight thousand, one hundred thirty-one".