3958147215 has 80 divisors (see below), whose sum is σ = 8007547680. Its totient is φ = 1852865280.

The previous prime is 3958147189. The next prime is 3958147217. The reversal of 3958147215 is 5127418593.

3958147215 is a `hidden beast` number, since 3 + 9 + 581 + 47 + 21 + 5 = 666.

It is not a de Polignac number, because 3958147215 - 2⁵ = 3958147183 is a prime.

It is a super-2 number, since 2×3958147215² = 31333858751224512450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958147217) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 113877 + ... + 144513.

It is an arithmetic number, because the mean of its divisors is an integer number (100094346).

Almost surely, 2^3958147215 is an apocalyptic number.

3958147215 is an abundant number, since it is smaller than the sum of its proper divisors (4049400465).

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

3958147215 is a wasteful number, since it uses less digits than its factorization.

3958147215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30694 (or 30685 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The square root of 3958147215 is about 62913.8078246739. The cubic root of 3958147215 is about 1581.8451997736.

The spelling of 3958147215 in words is "three billion, nine hundred fifty-eight million, one hundred forty-seven thousand, two hundred fifteen".