79138154 has 8 divisors (see below), whose sum is σ = 124955040. Its totient is φ = 37486476.

The previous prime is 79138151. The next prime is 79138183. The reversal of 79138154 is 45183197.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 2082583 = 79138154 / (7 + 9 + 1 + 3 + 8 + 1 + 5 + 4).

It is not an unprimeable number, because it can be changed into a prime (79138151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1041254 + ... + 1041329.

It is an arithmetic number, because the mean of its divisors is an integer number (15619380).

Almost surely, 2^79138154 is an apocalyptic number.

79138154 is a deficient number, since it is larger than the sum of its proper divisors (45816886).

79138154 is a wasteful number, since it uses less digits than its factorization.

79138154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2082604.

The product of its digits is 30240, while the sum is 38.

The square root of 79138154 is about 8895.9627921884. The cubic root of 79138154 is about 429.3340222578.

The spelling of 79138154 in words is "seventy-nine million, one hundred thirty-eight thousand, one hundred fifty-four".