149141609 has 2 divisors, whose sum is σ = 149141610. Its totient is φ = 149141608.

The previous prime is 149141567. The next prime is 149141611. The reversal of 149141609 is 906141941.

149141609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109098025 + 40043584 = 10445^2 + 6328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149141609 is a prime.

Together with 149141611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149141309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74570804 + 74570805.

It is an arithmetic number, because the mean of its divisors is an integer number (74570805).

Almost surely, 2^149141609 is an apocalyptic number.

It is an amenable number.

149141609 is a deficient number, since it is larger than the sum of its proper divisors (1).

149141609 is an equidigital number, since it uses as much as digits as its factorization.

149141609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 149141609 is about 12212.3547688396. The cubic root of 149141609 is about 530.3138155756.

The spelling of 149141609 in words is "one hundred forty-nine million, one hundred forty-one thousand, six hundred nine".