154944881 has 16 divisors (see below), whose sum is σ = 192495744. Its totient is φ = 121440384.

The previous prime is 154944877. The next prime is 154944893. The reversal of 154944881 is 188449451.

It is not a de Polignac number, because 154944881 - 2² = 154944877 is a prime.

It is a super-2 number, since 2×154944881² = 48015832296208322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (154944821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1781 + ... + 17693.

It is an arithmetic number, because the mean of its divisors is an integer number (12030984).

Almost surely, 2^154944881 is an apocalyptic number.

It is an amenable number.

154944881 is a deficient number, since it is larger than the sum of its proper divisors (37550863).

154944881 is a wasteful number, since it uses less digits than its factorization.

154944881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16040.

The product of its digits is 184320, while the sum is 44.

The square root of 154944881 is about 12447.6857688488. The cubic root of 154944881 is about 537.1048544131.

The spelling of 154944881 in words is "one hundred fifty-four million, nine hundred forty-four thousand, eight hundred eighty-one".