154138654 has 8 divisors (see below), whose sum is σ = 239180760. Its totient is φ = 74411736.

The previous prime is 154138651. The next prime is 154138679. The reversal of 154138654 is 456831451.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154138651) 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, 1328724 + ... + 1328839.

It is an arithmetic number, because the mean of its divisors is an integer number (29897595).

Almost surely, 2^154138654 is an apocalyptic number.

154138654 is a deficient number, since it is larger than the sum of its proper divisors (85042106).

154138654 is a wasteful number, since it uses less digits than its factorization.

154138654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657594.

The product of its digits is 57600, while the sum is 37.

The square root of 154138654 is about 12415.2589179606. The cubic root of 154138654 is about 536.1716587450.

The spelling of 154138654 in words is "one hundred fifty-four million, one hundred thirty-eight thousand, six hundred fifty-four".