19492299457 has 4 divisors (see below), whose sum is σ = 19520508976. Its totient is φ = 19464089940.

The previous prime is 19492299451. The next prime is 19492299479. The reversal of 19492299457 is 75499229491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19492299457 - 2¹⁹ = 19491775169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19492299395 and 19492299404.

It is not an unprimeable number, because it can be changed into a prime (19492299451) 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, 14103723 + ... + 14105104.

It is an arithmetic number, because the mean of its divisors is an integer number (4880127244).

Almost surely, 2^19492299457 is an apocalyptic number.

It is an amenable number.

19492299457 is a deficient number, since it is larger than the sum of its proper divisors (28209519).

19492299457 is an equidigital number, since it uses as much as digits as its factorization.

19492299457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28209518.

The product of its digits is 14696640, while the sum is 61.

The spelling of 19492299457 in words is "nineteen billion, four hundred ninety-two million, two hundred ninety-nine thousand, four hundred fifty-seven".