154157974 has 4 divisors (see below), whose sum is σ = 231236964. Its totient is φ = 77078986.

The previous prime is 154157953. The next prime is 154157987. The reversal of 154157974 is 479751451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 479751451 = 3433 ⋅139747.

It is a self number, because there is not a number n which added to its sum of digits gives 154157974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38539492 + ... + 38539495.

It is an arithmetic number, because the mean of its divisors is an integer number (57809241).

Almost surely, 2^154157974 is an apocalyptic number.

154157974 is a deficient number, since it is larger than the sum of its proper divisors (77078990).

154157974 is an equidigital number, since it uses as much as digits as its factorization.

154157974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77078989.

The product of its digits is 176400, while the sum is 43.

The square root of 154157974 is about 12416.0369683728. The cubic root of 154157974 is about 536.1940593638.

The spelling of 154157974 in words is "one hundred fifty-four million, one hundred fifty-seven thousand, nine hundred seventy-four".