10194945820 has 24 divisors (see below), whose sum is σ = 22100012928. Its totient is φ = 3946430400.

The previous prime is 10194945811. The next prime is 10194945823. The reversal of 10194945820 is 2854949101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10194945823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8221111 + ... + 8222350.

It is an arithmetic number, because the mean of its divisors is an integer number (920833872).

Almost surely, 2^10194945820 is an apocalyptic number.

10194945820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10194945820 is an abundant number, since it is smaller than the sum of its proper divisors (11905067108).

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

10194945820 is a wasteful number, since it uses less digits than its factorization.

10194945820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16443501 (or 16443499 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 10194945820 in words is "ten billion, one hundred ninety-four million, nine hundred forty-five thousand, eight hundred twenty".