1887313922 has 54 divisors (see below), whose sum is σ = 3280015323. Its totient is φ = 813930624.

The previous prime is 1887313913. The next prime is 1887313937. The reversal of 1887313922 is 2293137881.

It can be written as a sum of positive squares in 5 ways, for example, as 765130921 + 1122183001 = 27661^2 + 33499^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=30719.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13577729 + ... + 13577867.

Almost surely, 2^1887313922 is an apocalyptic number.

1887313922 is a deficient number, since it is larger than the sum of its proper divisors (1392701401).

1887313922 is a wasteful number, since it uses less digits than its factorization.

1887313922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 171 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 1887313922 is about 43443.2264225391. The cubic root of 1887313922 is about 1235.7995930001.

The spelling of 1887313922 in words is "one billion, eight hundred eighty-seven million, three hundred thirteen thousand, nine hundred twenty-two".