149195647 has 2 divisors, whose sum is σ = 149195648. Its totient is φ = 149195646.

The previous prime is 149195609. The next prime is 149195677. The reversal of 149195647 is 746591941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149195647 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149195597 and 149195606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149195677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74597823 + 74597824.

It is an arithmetic number, because the mean of its divisors is an integer number (74597824).

Almost surely, 2^149195647 is an apocalyptic number.

149195647 is a deficient number, since it is larger than the sum of its proper divisors (1).

149195647 is an equidigital number, since it uses as much as digits as its factorization.

149195647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 149195647 is about 12214.5670001028. The cubic root of 149195647 is about 530.3778568086.

The spelling of 149195647 in words is "one hundred forty-nine million, one hundred ninety-five thousand, six hundred forty-seven".