6242693991 has 4 divisors (see below), whose sum is σ = 8323591992. Its totient is φ = 4161795992.

The previous prime is 6242693939. The next prime is 6242693993. The reversal of 6242693991 is 1993962426.

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-6242693991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6242693993) 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, 1040448996 + ... + 1040449001.

It is an arithmetic number, because the mean of its divisors is an integer number (2080897998).

Almost surely, 2^6242693991 is an apocalyptic number.

6242693991 is a deficient number, since it is larger than the sum of its proper divisors (2080898001).

6242693991 is a wasteful number, since it uses less digits than its factorization.

6242693991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080898000.

The product of its digits is 1259712, while the sum is 51.

The square root of 6242693991 is about 79010.7207345940. The cubic root of 6242693991 is about 1841.2977210041.

The spelling of 6242693991 in words is "six billion, two hundred forty-two million, six hundred ninety-three thousand, nine hundred ninety-one".