19713092385 has 64 divisors (see below), whose sum is σ = 36827873280. Its totient is φ = 8818467840.

The previous prime is 19713092383. The next prime is 19713092393. The reversal of 19713092385 is 58329031791.

It is not a de Polignac number, because 19713092385 - 2¹ = 19713092383 is a prime.

It is a super-2 number, since 2×19713092385² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19713092381) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 926820 + ... + 947850.

It is an arithmetic number, because the mean of its divisors is an integer number (575435520).

Almost surely, 2^19713092385 is an apocalyptic number.

19713092385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19713092385 is a deficient number, since it is larger than the sum of its proper divisors (17114780895).

19713092385 is a wasteful number, since it uses less digits than its factorization.

19713092385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21238.

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 19713092385 in words is "nineteen billion, seven hundred thirteen million, ninety-two thousand, three hundred eighty-five".