149159915 has 4 divisors (see below), whose sum is σ = 178991904. Its totient is φ = 119327928.

The previous prime is 149159911. The next prime is 149159947. The reversal of 149159915 is 519951941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149159915 - 2² = 149159911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149159911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14915987 + ... + 14915996.

It is an arithmetic number, because the mean of its divisors is an integer number (44747976).

Almost surely, 2^149159915 is an apocalyptic number.

149159915 is a deficient number, since it is larger than the sum of its proper divisors (29831989).

149159915 is an equidigital number, since it uses as much as digits as its factorization.

149159915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29831988.

The product of its digits is 72900, while the sum is 44.

The square root of 149159915 is about 12213.1042327493. The cubic root of 149159915 is about 530.3355120192.

The spelling of 149159915 in words is "one hundred forty-nine million, one hundred fifty-nine thousand, nine hundred fifteen".