149516023 has 2 divisors, whose sum is σ = 149516024. Its totient is φ = 149516022.

The previous prime is 149516009. The next prime is 149516027. The reversal of 149516023 is 320615941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149516023 - 2⁵ = 149515991 is a prime.

It is a super-2 number, since 2×149516023² = 44710082267473058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149516027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74758011 + 74758012.

It is an arithmetic number, because the mean of its divisors is an integer number (74758012).

Almost surely, 2^149516023 is an apocalyptic number.

149516023 is a deficient number, since it is larger than the sum of its proper divisors (1).

149516023 is an equidigital number, since it uses as much as digits as its factorization.

149516023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 149516023 is about 12227.6744722780. The cubic root of 149516023 is about 530.7572218864.

The spelling of 149516023 in words is "one hundred forty-nine million, five hundred sixteen thousand, twenty-three".