19940340270 has 32 divisors (see below), whose sum is σ = 47867415552. Its totient is φ = 5316246432.

The previous prime is 19940340257. The next prime is 19940340293. The reversal of 19940340270 is 7204304991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68619 + ... + 211161.

It is an arithmetic number, because the mean of its divisors is an integer number (1495856736).

Almost surely, 2^19940340270 is an apocalyptic number.

19940340270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19940340270 is an abundant number, since it is smaller than the sum of its proper divisors (27927075282).

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

19940340270 is a wasteful number, since it uses less digits than its factorization.

19940340270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147216.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 19940340270 in words is "nineteen billion, nine hundred forty million, three hundred forty thousand, two hundred seventy".