149918523 has 8 divisors (see below), whose sum is σ = 200053008. Its totient is φ = 99864864.

The previous prime is 149918507. The next prime is 149918533. The reversal of 149918523 is 325819941.

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

It is not a de Polignac number, because 149918523 - 2⁴ = 149918507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149918533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15736 + ... + 23397.

It is an arithmetic number, because the mean of its divisors is an integer number (25006626).

Almost surely, 2^149918523 is an apocalyptic number.

149918523 is a deficient number, since it is larger than the sum of its proper divisors (50134485).

149918523 is a wasteful number, since it uses less digits than its factorization.

149918523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40413.

The product of its digits is 77760, while the sum is 42.

The square root of 149918523 is about 12244.1219775041. The cubic root of 149918523 is about 531.2330646874.

The spelling of 149918523 in words is "one hundred forty-nine million, nine hundred eighteen thousand, five hundred twenty-three".