18126238763 has 4 divisors (see below), whose sum is σ = 19192488120. Its totient is φ = 17059989408.

The previous prime is 18126238721. The next prime is 18126238787. The reversal of 18126238763 is 36783262181.

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

It is a cyclic number.

It is not a de Polignac number, because 18126238763 - 2²² = 18122044459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18126238463) 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, 533124653 + ... + 533124686.

It is an arithmetic number, because the mean of its divisors is an integer number (4798122030).

Almost surely, 2^18126238763 is an apocalyptic number.

18126238763 is a deficient number, since it is larger than the sum of its proper divisors (1066249357).

18126238763 is a wasteful number, since it uses less digits than its factorization.

18126238763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066249356.

The product of its digits is 580608, while the sum is 47.

The spelling of 18126238763 in words is "eighteen billion, one hundred twenty-six million, two hundred thirty-eight thousand, seven hundred sixty-three".