19492713 has 6 divisors (see below), whose sum is σ = 28156154. Its totient is φ = 12995136.

The previous prime is 19492699. The next prime is 19492723. The reversal of 19492713 is 31729491.

It can be written as a sum of positive squares in only one way, i.e., 18045504 + 1447209 = 4248^2 + 1203^2 .

It is not a de Polignac number, because 19492713 - 2⁸ = 19492457 is a prime.

It is a super-3 number, since 3×19492713³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19492723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1082920 + ... + 1082937.

Almost surely, 2^19492713 is an apocalyptic number.

It is an amenable number.

19492713 is a deficient number, since it is larger than the sum of its proper divisors (8663441).

19492713 is a wasteful number, since it uses less digits than its factorization.

19492713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165863 (or 2165860 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 19492713 is about 4415.0552657923. The cubic root of 19492713 is about 269.1270986747.

The spelling of 19492713 in words is "nineteen million, four hundred ninety-two thousand, seven hundred thirteen".