2045421886 has 8 divisors (see below), whose sum is σ = 3076680240. Its totient is φ = 1019861808.

The previous prime is 2045421857. The next prime is 2045421907. The reversal of 2045421886 is 6881245402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 1423671 + ... + 1425106.

It is an arithmetic number, because the mean of its divisors is an integer number (384585030).

Almost surely, 2^2045421886 is an apocalyptic number.

2045421886 is a deficient number, since it is larger than the sum of its proper divisors (1031258354).

2045421886 is a wasteful number, since it uses less digits than its factorization.

2045421886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849138.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 2045421886 is about 45226.3406213680. The cubic root of 2045421886 is about 1269.3877400964.

The spelling of 2045421886 in words is "two billion, forty-five million, four hundred twenty-one thousand, eight hundred eighty-six".