19426700686 has 8 divisors (see below), whose sum is σ = 29147629464. Its totient is φ = 9710824200.

The previous prime is 19426700681. The next prime is 19426700687. The reversal of 19426700686 is 68600762491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19426700681) 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, 1253445 + ... + 1268848.

It is an arithmetic number, because the mean of its divisors is an integer number (3643453683).

Almost surely, 2^19426700686 is an apocalyptic number.

19426700686 is a deficient number, since it is larger than the sum of its proper divisors (9720928778).

19426700686 is a wasteful number, since it uses less digits than its factorization.

19426700686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526146.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 19426700686 in words is "nineteen billion, four hundred twenty-six million, seven hundred thousand, six hundred eighty-six".