149973458 has 4 divisors (see below), whose sum is σ = 224960190. Its totient is φ = 74986728.

The previous prime is 149973437. The next prime is 149973493. The reversal of 149973458 is 854379941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 854379941 = 1823 ⋅468667.

It can be written as a sum of positive squares in only one way, i.e., 147306769 + 2666689 = 12137^2 + 1633^2 .

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 as a sum of consecutive naturals, namely, 37493363 + ... + 37493366.

Almost surely, 2^149973458 is an apocalyptic number.

149973458 is a deficient number, since it is larger than the sum of its proper divisors (74986732).

149973458 is an equidigital number, since it uses as much as digits as its factorization.

149973458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74986731.

The product of its digits is 1088640, while the sum is 50.

The square root of 149973458 is about 12246.3650933655. The cubic root of 149973458 is about 531.2979437607.

The spelling of 149973458 in words is "one hundred forty-nine million, nine hundred seventy-three thousand, four hundred fifty-eight".