154889474 has 8 divisors (see below), whose sum is σ = 238613628. Its totient is φ = 75351600.

The previous prime is 154889453. The next prime is 154889489. The reversal of 154889474 is 474988451.

It can be written as a sum of positive squares in 2 ways, for example, as 154878025 + 11449 = 12445^2 + 107^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1046477 + ... + 1046624.

Almost surely, 2^154889474 is an apocalyptic number.

154889474 is a deficient number, since it is larger than the sum of its proper divisors (83724154).

154889474 is a wasteful number, since it uses less digits than its factorization.

154889474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2093140.

The product of its digits is 1290240, while the sum is 50.

The square root of 154889474 is about 12445.4599754288. The cubic root of 154889474 is about 537.0408253717.

The spelling of 154889474 in words is "one hundred fifty-four million, eight hundred eighty-nine thousand, four hundred seventy-four".