19676681894 has 16 divisors (see below), whose sum is σ = 30474746880. Its totient is φ = 9518591880.

The previous prime is 19676681891. The next prime is 19676681951. The reversal of 19676681894 is 49818667691.

19676681894 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 19676681894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19676681891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223967 + ... + 299189.

It is an arithmetic number, because the mean of its divisors is an integer number (1904671680).

Almost surely, 2^19676681894 is an apocalyptic number.

19676681894 is a deficient number, since it is larger than the sum of its proper divisors (10798064986).

19676681894 is a wasteful number, since it uses less digits than its factorization.

19676681894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79475.

The product of its digits is 31352832, while the sum is 65.

The spelling of 19676681894 in words is "nineteen billion, six hundred seventy-six million, six hundred eighty-one thousand, eight hundred ninety-four".