1916582685 has 16 divisors (see below), whose sum is σ = 3131778816. Its totient is φ = 1000428608.

The previous prime is 1916582683. The next prime is 1916582747. The reversal of 1916582685 is 5862856191.

It is a cyclic number.

It is not a de Polignac number, because 1916582685 - 2¹ = 1916582683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916582683) 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, 1358574 + ... + 1359983.

It is an arithmetic number, because the mean of its divisors is an integer number (195736176).

Almost surely, 2^1916582685 is an apocalyptic number.

1916582685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1916582685 is a deficient number, since it is larger than the sum of its proper divisors (1215196131).

1916582685 is a wasteful number, since it uses less digits than its factorization.

1916582685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718612.

The product of its digits is 1036800, while the sum is 51.

The square root of 1916582685 is about 43778.7926398159. The cubic root of 1916582685 is about 1242.1551761171.

The spelling of 1916582685 in words is "one billion, nine hundred sixteen million, five hundred eighty-two thousand, six hundred eighty-five".