19940375100 has 72 divisors (see below), whose sum is σ = 58921728768. Its totient is φ = 5204292800.

The previous prime is 19940375087. The next prime is 19940375107. The reversal of 19940375100 is 157304991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940375107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 693006 + ... + 721205.

It is an arithmetic number, because the mean of its divisors is an integer number (818357344).

Almost surely, 2^19940375100 is an apocalyptic number.

19940375100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19940375100 is an abundant number, since it is smaller than the sum of its proper divisors (38981353668).

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

19940375100 is a wasteful number, since it uses less digits than its factorization.

19940375100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414275 (or 1414268 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The spelling of 19940375100 in words is "nineteen billion, nine hundred forty million, three hundred seventy-five thousand, one hundred".