5651981683 has 4 divisors (see below), whose sum is σ = 5668753480. Its totient is φ = 5635209888.

The previous prime is 5651981669. The next prime is 5651981693. The reversal of 5651981683 is 3861891565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5651981683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5651981683.

It is not an unprimeable number, because it can be changed into a prime (5651981693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8385393 + ... + 8386066.

It is an arithmetic number, because the mean of its divisors is an integer number (1417188370).

Almost surely, 2^5651981683 is an apocalyptic number.

5651981683 is a deficient number, since it is larger than the sum of its proper divisors (16771797).

5651981683 is a wasteful number, since it uses less digits than its factorization.

5651981683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16771796.

The product of its digits is 1555200, while the sum is 52.

The square root of 5651981683 is about 75179.6626954391. The cubic root of 5651981683 is about 1781.2857018998.

The spelling of 5651981683 in words is "five billion, six hundred fifty-one million, nine hundred eighty-one thousand, six hundred eighty-three".