149022637 has 2 divisors, whose sum is σ = 149022638. Its totient is φ = 149022636.

The previous prime is 149022623. The next prime is 149022647. The reversal of 149022637 is 736220941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79316836 + 69705801 = 8906^2 + 8349^2 .

It is a cyclic number.

It is not a de Polignac number, because 149022637 - 2⁷ = 149022509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149022607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74511318 + 74511319.

It is an arithmetic number, because the mean of its divisors is an integer number (74511319).

Almost surely, 2^149022637 is an apocalyptic number.

It is an amenable number.

149022637 is a deficient number, since it is larger than the sum of its proper divisors (1).

149022637 is an equidigital number, since it uses as much as digits as its factorization.

149022637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 149022637 is about 12207.4828281673. The cubic root of 149022637 is about 530.1727655591.

The spelling of 149022637 in words is "one hundred forty-nine million, twenty-two thousand, six hundred thirty-seven".