319149745 has 8 divisors (see below), whose sum is σ = 403136640. Its totient is φ = 241881840.

The previous prime is 319149739. The next prime is 319149769. The reversal of 319149745 is 547941913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 319149745 - 2³ = 319149737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679641 + ... + 1679830.

It is an arithmetic number, because the mean of its divisors is an integer number (50392080).

Almost surely, 2^319149745 is an apocalyptic number.

It is an amenable number.

319149745 is a deficient number, since it is larger than the sum of its proper divisors (83986895).

319149745 is a wasteful number, since it uses less digits than its factorization.

319149745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359495.

The product of its digits is 136080, while the sum is 43.

The square root of 319149745 is about 17864.7626628511. The cubic root of 319149745 is about 683.3840431665.

The spelling of 319149745 in words is "three hundred nineteen million, one hundred forty-nine thousand, seven hundred forty-five".