154493538 has 8 divisors (see below), whose sum is σ = 308987088. Its totient is φ = 51497844.

The previous prime is 154493531. The next prime is 154493561. The reversal of 154493538 is 835394451.

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

154493538 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 154493538.

It is not an unprimeable number, because it can be changed into a prime (154493531) 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, 12874456 + ... + 12874467.

It is an arithmetic number, because the mean of its divisors is an integer number (38623386).

Almost surely, 2^154493538 is an apocalyptic number.

154493538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154493538 is a wasteful number, since it uses less digits than its factorization.

154493538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25748928.

The product of its digits is 259200, while the sum is 42.

The square root of 154493538 is about 12429.5429521765. The cubic root of 154493538 is about 536.5828316164.

The spelling of 154493538 in words is "one hundred fifty-four million, four hundred ninety-three thousand, five hundred thirty-eight".