149319073 has 4 divisors (see below), whose sum is σ = 152136468. Its totient is φ = 146501680.

The previous prime is 149319067. The next prime is 149319083. The reversal of 149319073 is 370913941.

149319073 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70677649 + 78641424 = 8407^2 + 8868^2 .

It is a cyclic number.

It is not a de Polignac number, because 149319073 - 2¹⁷ = 149188001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149319083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1408618 + ... + 1408723.

It is an arithmetic number, because the mean of its divisors is an integer number (38034117).

Almost surely, 2^149319073 is an apocalyptic number.

It is an amenable number.

149319073 is a deficient number, since it is larger than the sum of its proper divisors (2817395).

149319073 is an equidigital number, since it uses as much as digits as its factorization.

149319073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817394.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 149319073 is about 12219.6183655628. The cubic root of 149319073 is about 530.5240728123.

The spelling of 149319073 in words is "one hundred forty-nine million, three hundred nineteen thousand, seventy-three".