45381830 has 32 divisors (see below), whose sum is σ = 90816768. Its totient is φ = 16214400.

The previous prime is 45381811. The next prime is 45381841. The reversal of 45381830 is 3818354.

It is a happy number.

45381830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1601 + ... + 9660.

It is an arithmetic number, because the mean of its divisors is an integer number (2838024).

Almost surely, 2^45381830 is an apocalyptic number.

45381830 is an abundant number, since it is smaller than the sum of its proper divisors (45434938).

45381830 is a wasteful number, since it uses less digits than its factorization.

45381830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 45381830 is about 6736.6037437272. The cubic root of 45381830 is about 356.6925195495.

The spelling of 45381830 in words is "forty-five million, three hundred eighty-one thousand, eight hundred thirty".