19139674 has 4 divisors (see below), whose sum is σ = 28709514. Its totient is φ = 9569836.

The previous prime is 19139663. The next prime is 19139711. The reversal of 19139674 is 47693191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16752649 + 2387025 = 4093^2 + 1545^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4784917 + ... + 4784920.

Almost surely, 2^19139674 is an apocalyptic number.

19139674 is a deficient number, since it is larger than the sum of its proper divisors (9569840).

19139674 is an equidigital number, since it uses as much as digits as its factorization.

19139674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9569839.

The product of its digits is 40824, while the sum is 40.

The square root of 19139674 is about 4374.8913129357. The cubic root of 19139674 is about 267.4924398830.

The spelling of 19139674 in words is "nineteen million, one hundred thirty-nine thousand, six hundred seventy-four".