20203937187 has 16 divisors (see below), whose sum is σ = 30789949440. Its totient is φ = 11543982912.

The previous prime is 20203937161. The next prime is 20203937197. The reversal of 20203937187 is 78173930202.

It is not a de Polignac number, because 20203937187 - 2¹⁶ = 20203871651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20203937197) 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, 205639 + ... + 287567.

It is an arithmetic number, because the mean of its divisors is an integer number (1924371840).

Almost surely, 2^20203937187 is an apocalyptic number.

20203937187 is a deficient number, since it is larger than the sum of its proper divisors (10586012253).

20203937187 is a wasteful number, since it uses less digits than its factorization.

20203937187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93682.

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 20203937187 in words is "twenty billion, two hundred three million, nine hundred thirty-seven thousand, one hundred eighty-seven".