149758161 has 12 divisors (see below), whose sum is σ = 232278192. Its totient is φ = 85576008.

The previous prime is 149758159. The next prime is 149758177. The reversal of 149758161 is 161857941.

It is not a de Polignac number, because 149758161 - 2¹ = 149758159 is a prime.

It is a super-2 number, since 2×149758161² = 44855013572203842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149758181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 509235 + ... + 509528.

It is an arithmetic number, because the mean of its divisors is an integer number (19356516).

Almost surely, 2^149758161 is an apocalyptic number.

It is an amenable number.

149758161 is a deficient number, since it is larger than the sum of its proper divisors (82520031).

149758161 is a wasteful number, since it uses less digits than its factorization.

149758161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018780 (or 1018773 counting only the distinct ones).

The product of its digits is 60480, while the sum is 42.

The square root of 149758161 is about 12237.5716953977. The cubic root of 149758161 is about 531.0435840109.

The spelling of 149758161 in words is "one hundred forty-nine million, seven hundred fifty-eight thousand, one hundred sixty-one".