149136901 has 2 divisors, whose sum is σ = 149136902. Its totient is φ = 149136900.

The previous prime is 149136847. The next prime is 149136919. The reversal of 149136901 is 109631941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87890625 + 61246276 = 9375^2 + 7826^2 .

It is a cyclic number.

It is not a de Polignac number, because 149136901 - 2⁷ = 149136773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149130901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74568450 + 74568451.

It is an arithmetic number, because the mean of its divisors is an integer number (74568451).

Almost surely, 2^149136901 is an apocalyptic number.

It is an amenable number.

149136901 is a deficient number, since it is larger than the sum of its proper divisors (1).

149136901 is an equidigital number, since it uses as much as digits as its factorization.

149136901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 149136901 is about 12212.1620116996. The cubic root of 149136901 is about 530.3082353226.

The spelling of 149136901 in words is "one hundred forty-nine million, one hundred thirty-six thousand, nine hundred one".