19374489 has 12 divisors (see below), whose sum is σ = 28275156. Its totient is φ = 12782592.

The previous prime is 19374469. The next prime is 19374493. The reversal of 19374489 is 98447391.

It can be written as a sum of positive squares in 2 ways, for example, as 14379264 + 4995225 = 3792^2 + 2235^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19374489 is a prime.

It is a super-2 number, since 2×19374489² = 750741648022242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19374449) 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, 10224 + ... + 11969.

It is an arithmetic number, because the mean of its divisors is an integer number (2356263).

Almost surely, 2^19374489 is an apocalyptic number.

It is an amenable number.

19374489 is a deficient number, since it is larger than the sum of its proper divisors (8900667).

19374489 is a wasteful number, since it uses less digits than its factorization.

19374489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22296 (or 22293 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 19374489 is about 4401.6461693326. The cubic root of 19374489 is about 268.5819064953.

The spelling of 19374489 in words is "nineteen million, three hundred seventy-four thousand, four hundred eighty-nine".