20003932197 has 6 divisors (see below), whose sum is σ = 28894568742. Its totient is φ = 13335954792.

The previous prime is 20003932183. The next prime is 20003932219. The reversal of 20003932197 is 79123930002.

It can be written as a sum of positive squares in only one way, i.e., 18880408836 + 1123523361 = 137406^2 + 33519^2 .

It is not a de Polignac number, because 20003932197 - 2³⁴ = 2824063013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003932097) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111329558 + ... + 1111329575.

It is an arithmetic number, because the mean of its divisors is an integer number (4815761457).

Almost surely, 2^20003932197 is an apocalyptic number.

It is an amenable number.

20003932197 is a deficient number, since it is larger than the sum of its proper divisors (8890636545).

20003932197 is a wasteful number, since it uses less digits than its factorization.

20003932197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222659139 (or 2222659136 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The spelling of 20003932197 in words is "twenty billion, three million, nine hundred thirty-two thousand, one hundred ninety-seven".