20163492940 has 48 divisors (see below), whose sum is σ = 46380146400. Its totient is φ = 7329201152.

The previous prime is 20163492893. The next prime is 20163492941. The reversal of 20163492940 is 4929436102.

It is a junction number, because it is equal to n+sod(n) for n = 20163492893 and 20163492902.

It is not an unprimeable number, because it can be changed into a prime (20163492941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1012630 + ... + 1032349.

It is an arithmetic number, because the mean of its divisors is an integer number (966253050).

Almost surely, 2^20163492940 is an apocalyptic number.

20163492940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20163492940 is an abundant number, since it is smaller than the sum of its proper divisors (26216653460).

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

20163492940 is a wasteful number, since it uses less digits than its factorization.

20163492940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045034 (or 2045032 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 20163492940 in words is "twenty billion, one hundred sixty-three million, four hundred ninety-two thousand, nine hundred forty".