149836961 has 2 divisors, whose sum is σ = 149836962. Its totient is φ = 149836960.

The previous prime is 149836957. The next prime is 149836969. The reversal of 149836961 is 169638941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110649361 + 39187600 = 10519^2 + 6260^2 .

It is a cyclic number.

It is not a de Polignac number, because 149836961 - 2² = 149836957 is a prime.

It is a super-2 number, since 2×149836961² = 44902229763431042, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (149836969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74918480 + 74918481.

It is an arithmetic number, because the mean of its divisors is an integer number (74918481).

Almost surely, 2^149836961 is an apocalyptic number.

It is an amenable number.

149836961 is a deficient number, since it is larger than the sum of its proper divisors (1).

149836961 is an equidigital number, since it uses as much as digits as its factorization.

149836961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The square root of 149836961 is about 12240.7908649727. The cubic root of 149836961 is about 531.1367094800.

The spelling of 149836961 in words is "one hundred forty-nine million, eight hundred thirty-six thousand, nine hundred sixty-one".