19436680923 has 16 divisors (see below), whose sum is σ = 28372159872. Its totient is φ = 11737880000.

The previous prime is 19436680903. The next prime is 19436680969. The reversal of 19436680923 is 32908663491.

It is not a de Polignac number, because 19436680923 - 2⁶ = 19436680859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19436680903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1038753 + ... + 1057298.

It is an arithmetic number, because the mean of its divisors is an integer number (1773259992).

Almost surely, 2^19436680923 is an apocalyptic number.

19436680923 is a deficient number, since it is larger than the sum of its proper divisors (8935478949).

19436680923 is a wasteful number, since it uses less digits than its factorization.

19436680923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096346.

The product of its (nonzero) digits is 1679616, while the sum is 51.

It can be divided in two parts, 1943 and 6680923, that added together give a palindrome (6682866).

The spelling of 19436680923 in words is "nineteen billion, four hundred thirty-six million, six hundred eighty thousand, nine hundred twenty-three".