19495739498404 has 27 divisors (see below), whose sum is σ = 36944067096993. Its totient is φ = 8997980629872.

The previous prime is 19495739498401. The next prime is 19495739498437. The reversal of 19495739498404 is 40489493759491.

It is a happy number.

The square root of 19495739498404 is 4415398.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2883985132900 + 16611754365504 = 1698230^2 + 4075752^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19495739498401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 114715437 + ... + 114885259.

Almost surely, 2^{19495739498404} is an apocalyptic number.

19495739498404 is the 4415398-th square number.

It is an amenable number.

19495739498404 is a deficient number, since it is larger than the sum of its proper divisors (17448327598589).

19495739498404 is an frugal number, since it uses more digits than its factorization.

19495739498404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339676 (or 169838 counting only the distinct ones).

The product of its (nonzero) digits is 1410877440, while the sum is 76.

The spelling of 19495739498404 in words is "nineteen trillion, four hundred ninety-five billion, seven hundred thirty-nine million, four hundred ninety-eight thousand, four hundred four".