149969158 has 4 divisors (see below), whose sum is σ = 224953740. Its totient is φ = 74984578.

The previous prime is 149969137. The next prime is 149969161. The reversal of 149969158 is 851969941.

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: 851969941 = 113 ⋅7539557.

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, 37492288 + ... + 37492291.

It is an arithmetic number, because the mean of its divisors is an integer number (56238435).

Almost surely, 2^149969158 is an apocalyptic number.

149969158 is a deficient number, since it is larger than the sum of its proper divisors (74984582).

149969158 is an equidigital number, since it uses as much as digits as its factorization.

149969158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74984581.

The product of its digits is 699840, while the sum is 52.

The square root of 149969158 is about 12246.1895298089. The cubic root of 149969158 is about 531.2928659667.

The spelling of 149969158 in words is "one hundred forty-nine million, nine hundred sixty-nine thousand, one hundred fifty-eight".