19492679700 has 216 divisors, whose sum is σ = 67858156800. Its totient is φ = 4798085760.

The previous prime is 19492679641. The next prime is 19492679807. The reversal of 19492679700 is 797629491.

19492679700 is a `hidden beast` number, since 1 + 9 + 492 + 67 + 97 + 0 + 0 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 434941 + ... + 477659.

Almost surely, 2^19492679700 is an apocalyptic number.

19492679700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19492679700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33929078400).

19492679700 is an abundant number, since it is smaller than the sum of its proper divisors (48365477100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19492679700 is a wasteful number, since it uses less digits than its factorization.

19492679700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42768 (or 42742 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 19492679700 in words is "nineteen billion, four hundred ninety-two million, six hundred seventy-nine thousand, seven hundred".