345619894 has 16 divisors (see below), whose sum is σ = 549351936. Its totient is φ = 162518400.

The previous prime is 345619889. The next prime is 345619907. The reversal of 345619894 is 498916543.

It is a happy number.

It is a super-2 number, since 2×345619894² = 238906222257142472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 51979 + ... + 58249.

It is an arithmetic number, because the mean of its divisors is an integer number (34334496).

Almost surely, 2^345619894 is an apocalyptic number.

345619894 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

345619894 is a deficient number, since it is larger than the sum of its proper divisors (203732042).

345619894 is a wasteful number, since it uses less digits than its factorization.

345619894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911.

The product of its digits is 933120, while the sum is 49.

The square root of 345619894 is about 18590.8551175033. The cubic root of 345619894 is about 701.7777222852. Note that the first 4 decimals are identical.

The spelling of 345619894 in words is "three hundred forty-five million, six hundred nineteen thousand, eight hundred ninety-four".