1912485887 has 16 divisors (see below), whose sum is σ = 2083777920. Its totient is φ = 1744764672.

The previous prime is 1912485851. The next prime is 1912485889. The reversal of 1912485887 is 7885842191.

It is a cyclic number.

It is not a de Polignac number, because 1912485887 - 2²⁴ = 1895708671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912485889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423413 + ... + 427905.

It is an arithmetic number, because the mean of its divisors is an integer number (130236120).

Almost surely, 2^1912485887 is an apocalyptic number.

1912485887 is a deficient number, since it is larger than the sum of its proper divisors (171292033).

1912485887 is a wasteful number, since it uses less digits than its factorization.

1912485887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882.

The product of its digits is 1290240, while the sum is 53.

The square root of 1912485887 is about 43731.9778537399. The cubic root of 1912485887 is about 1241.2694870387.

The spelling of 1912485887 in words is "one billion, nine hundred twelve million, four hundred eighty-five thousand, eight hundred eighty-seven".