1887045745 has 32 divisors (see below), whose sum is σ = 2484518400. Its totient is φ = 1367518464.

The previous prime is 1887045709. The next prime is 1887045749. The reversal of 1887045745 is 5475407881.

It is a de Polignac number, because none of the positive numbers 2^k-1887045745 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1887045749) 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 31 ways as a sum of consecutive naturals, for example, 918139 + ... + 920191.

It is an arithmetic number, because the mean of its divisors is an integer number (77641200).

Almost surely, 2^1887045745 is an apocalyptic number.

It is an amenable number.

1887045745 is a deficient number, since it is larger than the sum of its proper divisors (597472655).

1887045745 is a wasteful number, since it uses less digits than its factorization.

1887045745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 1254400, while the sum is 49.

The square root of 1887045745 is about 43440.1397902907. The cubic root of 1887045745 is about 1235.7410567700.

The spelling of 1887045745 in words is "one billion, eight hundred eighty-seven million, forty-five thousand, seven hundred forty-five".