19230740685 has 96 divisors (see below), whose sum is σ = 37317242880. Its totient is φ = 9391479552.

The previous prime is 19230740677. The next prime is 19230740687. The reversal of 19230740685 is 58604703291.

19230740685 is a `hidden beast` number, since 1 + 9 + 230 + 7 + 406 + 8 + 5 = 666.

It is not a de Polignac number, because 19230740685 - 2³ = 19230740677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 19230740685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19230740687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2894187 + ... + 2900823.

It is an arithmetic number, because the mean of its divisors is an integer number (388721280).

It is a 1-persistent number, because it is pandigital, but 2⋅19230740685 = 38461481370 is not.

Almost surely, 2^19230740685 is an apocalyptic number.

19230740685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19230740685 is a deficient number, since it is larger than the sum of its proper divisors (18086502195).

19230740685 is a wasteful number, since it uses less digits than its factorization.

19230740685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804 (or 6785 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 19230740685 in words is "nineteen billion, two hundred thirty million, seven hundred forty thousand, six hundred eighty-five".