345149719 has 4 divisors (see below), whose sum is σ = 345434544. Its totient is φ = 344864896.

The previous prime is 345149711. The next prime is 345149731. The reversal of 345149719 is 917941543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 917941543 = 7349 ⋅124907.

It is a cyclic number.

It is not a de Polignac number, because 345149719 - 2³ = 345149711 is a prime.

It is a super-2 number, since 2×345149719² = 238256657051557922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345149711) 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, 140587 + ... + 143020.

It is an arithmetic number, because the mean of its divisors is an integer number (86358636).

Almost surely, 2^345149719 is an apocalyptic number.

345149719 is a deficient number, since it is larger than the sum of its proper divisors (284825).

345149719 is a wasteful number, since it uses less digits than its factorization.

345149719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284824.

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

The square root of 345149719 is about 18578.2054838458. The cubic root of 345149719 is about 701.4593493340.

The spelling of 345149719 in words is "three hundred forty-five million, one hundred forty-nine thousand, seven hundred nineteen".