2045980451 has 4 divisors (see below), whose sum is σ = 2046115512. Its totient is φ = 2045845392.

The previous prime is 2045980441. The next prime is 2045980499. The reversal of 2045980451 is 1540895402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2045980451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045980441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41450 + ... + 76223.

It is an arithmetic number, because the mean of its divisors is an integer number (511528878).

Almost surely, 2^2045980451 is an apocalyptic number.

2045980451 is a deficient number, since it is larger than the sum of its proper divisors (135061).

2045980451 is a wasteful number, since it uses less digits than its factorization.

2045980451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135060.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 2045980451 is about 45232.5154175622. The cubic root of 2045980451 is about 1269.5032779612.

The spelling of 2045980451 in words is "two billion, forty-five million, nine hundred eighty thousand, four hundred fifty-one".