6291788053 has 4 divisors (see below), whose sum is σ = 6319263340. Its totient is φ = 6264312768.

The previous prime is 6291788039. The next prime is 6291788081. The reversal of 6291788053 is 3508871926.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3236130769 + 3055657284 = 56887^2 + 55278^2 .

It is a cyclic number.

It is not a de Polignac number, because 6291788053 - 2¹³ = 6291779861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6291787988 and 6291788006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6291788033) 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, 13737300 + ... + 13737757.

It is an arithmetic number, because the mean of its divisors is an integer number (1579815835).

Almost surely, 2^6291788053 is an apocalyptic number.

It is an amenable number.

6291788053 is a deficient number, since it is larger than the sum of its proper divisors (27475287).

6291788053 is a wasteful number, since it uses less digits than its factorization.

6291788053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27475286.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 6291788053 is about 79320.7920598376. The cubic root of 6291788053 is about 1846.1119271305. Note that the first 3 decimals are identical.

The spelling of 6291788053 in words is "six billion, two hundred ninety-one million, seven hundred eighty-eight thousand, fifty-three".