6349993511 has 4 divisors (see below), whose sum is σ = 6353827392. Its totient is φ = 6346159632.

The previous prime is 6349993501. The next prime is 6349993537. The reversal of 6349993511 is 1153999436.

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-6349993511 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 6349993511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6349993501) 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, 1914455 + ... + 1917768.

It is an arithmetic number, because the mean of its divisors is an integer number (1588456848).

Almost surely, 2^6349993511 is an apocalyptic number.

6349993511 is a deficient number, since it is larger than the sum of its proper divisors (3833881).

6349993511 is a wasteful number, since it uses less digits than its factorization.

6349993511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3833880.

The product of its digits is 787320, while the sum is 50.

The square root of 6349993511 is about 79686.8465369285. The cubic root of 6349993511 is about 1851.7872682514.

The spelling of 6349993511 in words is "six billion, three hundred forty-nine million, nine hundred ninety-three thousand, five hundred eleven".