153994474 has 4 divisors (see below), whose sum is σ = 230991714. Its totient is φ = 76997236.

The previous prime is 153994459. The next prime is 153994493. The reversal of 153994474 is 474499351.

153994474 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 79085449 + 74909025 = 8893^2 + 8655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38498617 + ... + 38498620.

Almost surely, 2^153994474 is an apocalyptic number.

153994474 is a deficient number, since it is larger than the sum of its proper divisors (76997240).

153994474 is an equidigital number, since it uses as much as digits as its factorization.

153994474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76997239.

The product of its digits is 544320, while the sum is 46.

The square root of 153994474 is about 12409.4509951085. The cubic root of 153994474 is about 536.0044297733.

The spelling of 153994474 in words is "one hundred fifty-three million, nine hundred ninety-four thousand, four hundred seventy-four".