19314739 has 4 divisors (see below), whose sum is σ = 19324656. Its totient is φ = 19304824.

The previous prime is 19314709. The next prime is 19314761. The reversal of 19314739 is 93741391.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 19314739 - 2¹¹ = 19312691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19314698 and 19314707.

It is not an unprimeable number, because it can be changed into a prime (19314709) 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, 964 + ... + 6289.

It is an arithmetic number, because the mean of its divisors is an integer number (4831164).

Almost surely, 2^19314739 is an apocalyptic number.

19314739 is a deficient number, since it is larger than the sum of its proper divisors (9917).

19314739 is an equidigital number, since it uses as much as digits as its factorization.

19314739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9916.

The product of its digits is 20412, while the sum is 37.

The square root of 19314739 is about 4394.8536949482. The cubic root of 19314739 is about 268.3055242539.

It can be divided in two parts, 1931 and 4739, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 19314739 in words is "nineteen million, three hundred fourteen thousand, seven hundred thirty-nine".