20190929100 has 36 divisors (see below), whose sum is σ = 58419089064. Its totient is φ = 5384247680.

The previous prime is 20190929071. The next prime is 20190929107. The reversal of 20190929100 is 192909102.

It is not an unprimeable number, because it can be changed into a prime (20190929107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33651249 + ... + 33651848.

It is an arithmetic number, because the mean of its divisors is an integer number (1622752474).

Almost surely, 2^20190929100 is an apocalyptic number.

20190929100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20190929100 is an abundant number, since it is smaller than the sum of its proper divisors (38228159964).

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

20190929100 is a wasteful number, since it uses less digits than its factorization.

20190929100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67303114 (or 67303107 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The spelling of 20190929100 in words is "twenty billion, one hundred ninety million, nine hundred twenty-nine thousand, one hundred".