874138815 has 48 divisors (see below), whose sum is σ = 1660538880. Its totient is φ = 421871040.

The previous prime is 874138799. The next prime is 874138823. The reversal of 874138815 is 518831478.

It is a happy number.

It is not a de Polignac number, because 874138815 - 2⁴ = 874138799 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 106426 + ... + 114344.

It is an arithmetic number, because the mean of its divisors is an integer number (34594560).

Almost surely, 2^874138815 is an apocalyptic number.

874138815 is a deficient number, since it is larger than the sum of its proper divisors (786400065).

874138815 is a wasteful number, since it uses less digits than its factorization.

874138815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8164 (or 8161 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 874138815 is about 29565.8386486837. The cubic root of 874138815 is about 956.1517002632.

The spelling of 874138815 in words is "eight hundred seventy-four million, one hundred thirty-eight thousand, eight hundred fifteen".