2045445542 has 32 divisors (see below), whose sum is σ = 3721204800. Its totient is φ = 823173120.

The previous prime is 2045445541. The next prime is 2045445557. The reversal of 2045445542 is 2455445402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045445541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97292 + ... + 116432.

It is an arithmetic number, because the mean of its divisors is an integer number (116287650).

Almost surely, 2^2045445542 is an apocalyptic number.

2045445542 is a deficient number, since it is larger than the sum of its proper divisors (1675759258).

2045445542 is a wasteful number, since it uses less digits than its factorization.

2045445542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19616.

The product of its (nonzero) digits is 128000, while the sum is 35.

The square root of 2045445542 is about 45226.6021496199. The cubic root of 2045445542 is about 1269.3926337113.

The spelling of 2045445542 in words is "two billion, forty-five million, four hundred forty-five thousand, five hundred forty-two".