149195677 has 2 divisors, whose sum is σ = 149195678. Its totient is φ = 149195676.

The previous prime is 149195647. The next prime is 149195819. The reversal of 149195677 is 776591941.

149195677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103754596 + 45441081 = 10186^2 + 6741^2 .

It is a cyclic number.

It is not a de Polignac number, because 149195677 - 2¹⁹ = 148671389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149195677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149195647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74597838 + 74597839.

It is an arithmetic number, because the mean of its divisors is an integer number (74597839).

Almost surely, 2^149195677 is an apocalyptic number.

It is an amenable number.

149195677 is a deficient number, since it is larger than the sum of its proper divisors (1).

149195677 is an equidigital number, since it uses as much as digits as its factorization.

149195677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 149195677 is about 12214.5682281446. The cubic root of 149195677 is about 530.3778923577.

The spelling of 149195677 in words is "one hundred forty-nine million, one hundred ninety-five thousand, six hundred seventy-seven".