149616261 has 16 divisors (see below), whose sum is σ = 228805120. Its totient is φ = 96526080.

The previous prime is 149616251. The next prime is 149616277. The reversal of 149616261 is 162616941.

149616261 is a `hidden beast` number, since 1 + 496 + 162 + 6 + 1 = 666.

It is not a de Polignac number, because 149616261 - 2⁹ = 149615749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149616251) 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, 88540 + ... + 90213.

It is an arithmetic number, because the mean of its divisors is an integer number (14300320).

Almost surely, 2^149616261 is an apocalyptic number.

It is an amenable number.

149616261 is a deficient number, since it is larger than the sum of its proper divisors (79188859).

149616261 is a wasteful number, since it uses less digits than its factorization.

149616261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178793 (or 178787 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 149616261 is about 12231.7726025299. The cubic root of 149616261 is about 530.8758048463.

The spelling of 149616261 in words is "one hundred forty-nine million, six hundred sixteen thousand, two hundred sixty-one".