154157218 has 16 divisors (see below), whose sum is σ = 235424160. Its totient is φ = 75689856.

The previous prime is 154157197. The next prime is 154157221. The reversal of 154157218 is 812751451.

It is a super-2 number, since 2×154157218² = 47528895722999048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45673 + ... + 48931.

It is an arithmetic number, because the mean of its divisors is an integer number (14714010).

Almost surely, 2^154157218 is an apocalyptic number.

154157218 is a deficient number, since it is larger than the sum of its proper divisors (81266942).

154157218 is a wasteful number, since it uses less digits than its factorization.

154157218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681.

The product of its digits is 11200, while the sum is 34.

The square root of 154157218 is about 12416.0065238385. The cubic root of 154157218 is about 536.1931828531.

The spelling of 154157218 in words is "one hundred fifty-four million, one hundred fifty-seven thousand, two hundred eighteen".