20201001908 has 12 divisors (see below), whose sum is σ = 35353336452. Its totient is φ = 10100048640.

The previous prime is 20201001857. The next prime is 20201001941. The reversal of 20201001908 is 80910010202.

It can be written as a sum of positive squares in 2 ways, for example, as 5327248144 + 14873753764 = 72988^2 + 121958^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35 + ... + 201002.

It is an arithmetic number, because the mean of its divisors is an integer number (2946111371).

Almost surely, 2^20201001908 is an apocalyptic number.

It is an amenable number.

20201001908 is a deficient number, since it is larger than the sum of its proper divisors (15152334544).

20201001908 is a wasteful number, since it uses less digits than its factorization.

20201001908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226162 (or 226160 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 20201001908 in words is "twenty billion, two hundred one million, one thousand, nine hundred eight".