149813849 has 4 divisors (see below), whose sum is σ = 153297936. Its totient is φ = 146329764.

The previous prime is 149813821. The next prime is 149813887. The reversal of 149813849 is 948318941.

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 a de Polignac number, because none of the positive numbers 2^k-149813849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149813819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1741979 + ... + 1742064.

It is an arithmetic number, because the mean of its divisors is an integer number (38324484).

Almost surely, 2^149813849 is an apocalyptic number.

It is an amenable number.

149813849 is a deficient number, since it is larger than the sum of its proper divisors (3484087).

149813849 is an equidigital number, since it uses as much as digits as its factorization.

149813849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484086.

The product of its digits is 248832, while the sum is 47.

The square root of 149813849 is about 12239.8467719167. The cubic root of 149813849 is about 531.1093992117.

The spelling of 149813849 in words is "one hundred forty-nine million, eight hundred thirteen thousand, eight hundred forty-nine".