149522649 has 4 divisors (see below), whose sum is σ = 199363536. Its totient is φ = 99681764.

The previous prime is 149522623. The next prime is 149522657. The reversal of 149522649 is 946225941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149522649 - 2¹¹ = 149520601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149522649.

It is not an unprimeable number, because it can be changed into a prime (149522749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24920439 + ... + 24920444.

It is an arithmetic number, because the mean of its divisors is an integer number (49840884).

Almost surely, 2^149522649 is an apocalyptic number.

It is an amenable number.

149522649 is a deficient number, since it is larger than the sum of its proper divisors (49840887).

149522649 is an equidigital number, since it uses as much as digits as its factorization.

149522649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49840886.

The product of its digits is 155520, while the sum is 42.

The square root of 149522649 is about 12227.9454120469. The cubic root of 149522649 is about 530.7650621730.

The spelling of 149522649 in words is "one hundred forty-nine million, five hundred twenty-two thousand, six hundred forty-nine".