19345842 has 24 divisors (see below), whose sum is σ = 43362540. Its totient is φ = 6226080.

The previous prime is 19345831. The next prime is 19345849. The reversal of 19345842 is 24854391.

It can be written as a sum of positive squares in 2 ways, for example, as 18224361 + 1121481 = 4269^2 + 1059^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19345797 and 19345806.

It is not an unprimeable number, because it can be changed into a prime (19345849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18009 + ... + 19052.

Almost surely, 2^19345842 is an apocalyptic number.

19345842 is an abundant number, since it is smaller than the sum of its proper divisors (24016698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19345842 is a wasteful number, since it uses less digits than its factorization.

19345842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37098 (or 37095 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 19345842 is about 4398.3908421149. The cubic root of 19345842 is about 268.4494666819.

It can be divided in two parts, 1934 and 5842, that added together give a 5-th power (7776 = 6⁵).

The spelling of 19345842 in words is "nineteen million, three hundred forty-five thousand, eight hundred forty-two".