45781893 has 12 divisors (see below), whose sum is σ = 66220128. Its totient is φ = 30479400.

The previous prime is 45781861. The next prime is 45781919. The reversal of 45781893 is 39818754.

45781893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 45781893 - 2⁵ = 45781861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45781093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4368 + ... + 10518.

It is an arithmetic number, because the mean of its divisors is an integer number (5518344).

Almost surely, 2^45781893 is an apocalyptic number.

It is an amenable number.

45781893 is a deficient number, since it is larger than the sum of its proper divisors (20438235).

45781893 is a wasteful number, since it uses less digits than its factorization.

45781893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984 (or 6981 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 45781893 is about 6766.2318168978. The cubic root of 45781893 is about 357.7375941914.

The spelling of 45781893 in words is "forty-five million, seven hundred eighty-one thousand, eight hundred ninety-three".