149668957 has 2 divisors, whose sum is σ = 149668958. Its totient is φ = 149668956.

The previous prime is 149668943. The next prime is 149668993. The reversal of 149668957 is 759866941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143856036 + 5812921 = 11994^2 + 2411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149668957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149668898 and 149668907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149668927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74834478 + 74834479.

It is an arithmetic number, because the mean of its divisors is an integer number (74834479).

Almost surely, 2^149668957 is an apocalyptic number.

It is an amenable number.

149668957 is a deficient number, since it is larger than the sum of its proper divisors (1).

149668957 is an equidigital number, since it uses as much as digits as its factorization.

149668957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 55.

The square root of 149668957 is about 12233.9264751755. The cubic root of 149668957 is about 530.9381237135.

The spelling of 149668957 in words is "one hundred forty-nine million, six hundred sixty-eight thousand, nine hundred fifty-seven".