1873908645 has 16 divisors (see below), whose sum is σ = 3426576000. Its totient is φ = 856643904.

The previous prime is 1873908637. The next prime is 1873908661. The reversal of 1873908645 is 5468093781.

It is not a de Polignac number, because 1873908645 - 2³ = 1873908637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8923270 + ... + 8923479.

It is an arithmetic number, because the mean of its divisors is an integer number (214161000).

Almost surely, 2^1873908645 is an apocalyptic number.

1873908645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1873908645 is a deficient number, since it is larger than the sum of its proper divisors (1552667355).

1873908645 is a wasteful number, since it uses less digits than its factorization.

1873908645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17846764.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 1873908645 is about 43288.6664728772. Note that the first 3 decimals coincide. The cubic root of 1873908645 is about 1232.8667451429.

The spelling of 1873908645 in words is "one billion, eight hundred seventy-three million, nine hundred eight thousand, six hundred forty-five".