18734246451 has 6 divisors (see below), whose sum is σ = 27060578220. Its totient is φ = 12489497628.

The previous prime is 18734246441. The next prime is 18734246477. The reversal of 18734246451 is 15464243781.

18734246451 is a `hidden beast` number, since 187 + 3 + 4 + 2 + 464 + 5 + 1 = 666.

It is not a de Polignac number, because 18734246451 - 2⁶ = 18734246387 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18734246397 and 18734246406.

It is not an unprimeable number, because it can be changed into a prime (18734246441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1040791461 + ... + 1040791478.

It is an arithmetic number, because the mean of its divisors is an integer number (4510096370).

Almost surely, 2^18734246451 is an apocalyptic number.

18734246451 is a deficient number, since it is larger than the sum of its proper divisors (8326331769).

18734246451 is a wasteful number, since it uses less digits than its factorization.

18734246451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081582945 (or 2081582942 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 18734246451 in words is "eighteen billion, seven hundred thirty-four million, two hundred forty-six thousand, four hundred fifty-one".