18248208451 has 16 divisors (see below), whose sum is σ = 20456223840. Its totient is φ = 16132193280.

The previous prime is 18248208401. The next prime is 18248208467. The reversal of 18248208451 is 15480284281.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18248208451 is a prime.

It is a super-2 number, since 2×18248208451² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18248208398 and 18248208407.

It is not an unprimeable number, because it can be changed into a prime (18248208401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809805 + ... + 832033.

It is an arithmetic number, because the mean of its divisors is an integer number (1278513990).

Almost surely, 2^18248208451 is an apocalyptic number.

18248208451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18248208451 is a deficient number, since it is larger than the sum of its proper divisors (2208015389).

18248208451 is a wasteful number, since it uses less digits than its factorization.

18248208451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24294.

The product of its (nonzero) digits is 163840, while the sum is 43.

The spelling of 18248208451 in words is "eighteen billion, two hundred forty-eight million, two hundred eight thousand, four hundred fifty-one".