20203830945 has 32 divisors (see below), whose sum is σ = 36888685440. Its totient is φ = 10484147520.

The previous prime is 20203830901. The next prime is 20203830961. The reversal of 20203830945 is 54903830202.

It is not a de Polignac number, because 20203830945 - 2¹² = 20203826849 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2017411 + ... + 2027400.

It is an arithmetic number, because the mean of its divisors is an integer number (1152771420).

Almost surely, 2^20203830945 is an apocalyptic number.

It is an amenable number.

20203830945 is a deficient number, since it is larger than the sum of its proper divisors (16684854495).

20203830945 is a wasteful number, since it uses less digits than its factorization.

20203830945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044862 (or 4044856 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 20203830945 in words is "twenty billion, two hundred three million, eight hundred thirty thousand, nine hundred forty-five".