1868711964 has 48 divisors (see below), whose sum is σ = 5013109248. Its totient is φ = 530716608.

The previous prime is 1868711953. The next prime is 1868711989. The reversal of 1868711964 is 4691178681.

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, 52579 + ... + 80634.

It is an arithmetic number, because the mean of its divisors is an integer number (104439776).

Almost surely, 2^1868711964 is an apocalyptic number.

1868711964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1868711964 is an abundant number, since it is smaller than the sum of its proper divisors (3144397284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868711964 is a wasteful number, since it uses less digits than its factorization.

1868711964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133394 (or 133392 counting only the distinct ones).

The product of its digits is 580608, while the sum is 51.

The square root of 1868711964 is about 43228.6012265028. The cubic root of 1868711964 is about 1231.7260373217.

The spelling of 1868711964 in words is "one billion, eight hundred sixty-eight million, seven hundred eleven thousand, nine hundred sixty-four".