149583569 has 2 divisors, whose sum is σ = 149583570. Its totient is φ = 149583568.

The previous prime is 149583547. The next prime is 149583571. The reversal of 149583569 is 965385941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93857344 + 55726225 = 9688^2 + 7465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149583569 is a prime.

It is a super-2 number, since 2×149583569² = 44750488229555522, which contains 22 as substring.

Together with 149583571, 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 (142583569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74791784 + 74791785.

It is an arithmetic number, because the mean of its divisors is an integer number (74791785).

Almost surely, 2^149583569 is an apocalyptic number.

It is an amenable number.

149583569 is a deficient number, since it is larger than the sum of its proper divisors (1).

149583569 is an equidigital number, since it uses as much as digits as its factorization.

149583569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 50.

The square root of 149583569 is about 12230.4361737429. The cubic root of 149583569 is about 530.8371355735.

The spelling of 149583569 in words is "one hundred forty-nine million, five hundred eighty-three thousand, five hundred sixty-nine".