149819973 has 16 divisors (see below), whose sum is σ = 207068160. Its totient is φ = 96289776.

The previous prime is 149819951. The next prime is 149819977. The reversal of 149819973 is 379918941.

It is a happy number.

It is not a de Polignac number, because 149819973 - 2⁵ = 149819941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149819977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1518 + ... + 17376.

It is an arithmetic number, because the mean of its divisors is an integer number (12941760).

Almost surely, 2^149819973 is an apocalyptic number.

It is an amenable number.

149819973 is a deficient number, since it is larger than the sum of its proper divisors (57248187).

149819973 is a wasteful number, since it uses less digits than its factorization.

149819973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15976.

The product of its digits is 489888, while the sum is 51.

The square root of 149819973 is about 12240.0969358907. The cubic root of 149819973 is about 531.1166359028.

The spelling of 149819973 in words is "one hundred forty-nine million, eight hundred nineteen thousand, nine hundred seventy-three".