19690827630 has 32 divisors (see below), whose sum is σ = 47266318368. Its totient is φ = 5249961600.

The previous prime is 19690827623. The next prime is 19690827679. The reversal of 19690827630 is 3672809691.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124560 + ... + 234300.

It is an arithmetic number, because the mean of its divisors is an integer number (1477072449).

Almost surely, 2^19690827630 is an apocalyptic number.

19690827630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19690827630 is an abundant number, since it is smaller than the sum of its proper divisors (27575490738).

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

19690827630 is a wasteful number, since it uses less digits than its factorization.

19690827630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115732.

The product of its (nonzero) digits is 979776, while the sum is 51.

The spelling of 19690827630 in words is "nineteen billion, six hundred ninety million, eight hundred twenty-seven thousand, six hundred thirty".