2054089890 has 24 divisors (see below), whose sum is σ = 5340633948. Its totient is φ = 547757280.

The previous prime is 2054089871. The next prime is 2054089901. The reversal of 2054089890 is 989804502.

2054089890 is a `hidden beast` number, since 20 + 540 + 8 + 9 + 89 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2030673969 + 23415921 = 45063^2 + 4839^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11411521 + ... + 11411700.

Almost surely, 2^2054089890 is an apocalyptic number.

2054089890 is an abundant number, since it is smaller than the sum of its proper divisors (3286544058).

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

2054089890 is a wasteful number, since it uses less digits than its factorization.

2054089890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22823234 (or 22823231 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 2054089890 is about 45322.0684655941. The cubic root of 2054089890 is about 1271.1783326723.

The spelling of 2054089890 in words is "two billion, fifty-four million, eighty-nine thousand, eight hundred ninety".