345694019 has 4 divisors (see below), whose sum is σ = 377120760. Its totient is φ = 314267280.

The previous prime is 345694003. The next prime is 345694033. The reversal of 345694019 is 910496543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910496543 = 11 ⋅82772413.

It is a cyclic number.

It is not a de Polignac number, because 345694019 - 2⁴ = 345694003 is a prime.

It is a super-2 number, since 2×345694019² = 239008709544744722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345691019) 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, 15713354 + ... + 15713375.

It is an arithmetic number, because the mean of its divisors is an integer number (94280190).

Almost surely, 2^345694019 is an apocalyptic number.

345694019 is a deficient number, since it is larger than the sum of its proper divisors (31426741).

345694019 is a wasteful number, since it uses less digits than its factorization.

345694019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31426740.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 345694019 is about 18592.8485983187. The cubic root of 345694019 is about 701.8278887215.

The spelling of 345694019 in words is "three hundred forty-five million, six hundred ninety-four thousand, nineteen".