19400699420 has 12 divisors (see below), whose sum is σ = 40741468824. Its totient is φ = 7760279760.

The previous prime is 19400699419. The next prime is 19400699453. The reversal of 19400699420 is 2499600491.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485017466 + ... + 485017505.

It is an arithmetic number, because the mean of its divisors is an integer number (3395122402).

Almost surely, 2^19400699420 is an apocalyptic number.

19400699420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19400699420 is an abundant number, since it is smaller than the sum of its proper divisors (21340769404).

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

19400699420 is a wasteful number, since it uses less digits than its factorization.

19400699420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970034980 (or 970034978 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 19400699420 in words is "nineteen billion, four hundred million, six hundred ninety-nine thousand, four hundred twenty".