154216397938 has 16 divisors (see below), whose sum is σ = 232763731200. Its totient is φ = 76629078000.

The previous prime is 154216397891. The next prime is 154216397939. The reversal of 154216397938 is 839793612451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (154216397939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378463 + ... + 672061.

It is an arithmetic number, because the mean of its divisors is an integer number (14547733200).

Almost surely, 2^154216397938 is an apocalyptic number.

154216397938 is a deficient number, since it is larger than the sum of its proper divisors (78547333262).

154216397938 is a wasteful number, since it uses less digits than its factorization.

154216397938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295233.

The product of its digits is 9797760, while the sum is 58.

The spelling of 154216397938 in words is "one hundred fifty-four billion, two hundred sixteen million, three hundred ninety-seven thousand, nine hundred thirty-eight".