149673613 has 2 divisors, whose sum is σ = 149673614. Its totient is φ = 149673612.

The previous prime is 149673607. The next prime is 149673631. The reversal of 149673613 is 316376941.

Together with next prime (149673631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86899684 + 62773929 = 9322^2 + 7923^2 .

It is an emirp because it is prime and its reverse (316376941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149673613 - 2⁹ = 149673101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149673653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74836806 + 74836807.

It is an arithmetic number, because the mean of its divisors is an integer number (74836807).

Almost surely, 2^149673613 is an apocalyptic number.

It is an amenable number.

149673613 is a deficient number, since it is larger than the sum of its proper divisors (1).

149673613 is an equidigital number, since it uses as much as digits as its factorization.

149673613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 40.

The square root of 149673613 is about 12234.1167641968. The cubic root of 149673613 is about 530.9436292468.

The spelling of 149673613 in words is "one hundred forty-nine million, six hundred seventy-three thousand, six hundred thirteen".