18252447454 has 8 divisors (see below), whose sum is σ = 27399687120. Its totient is φ = 9119218416.

The previous prime is 18252447427. The next prime is 18252447457. The reversal of 18252447454 is 45474425281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18252447454² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18252447457) 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, 3499399 + ... + 3504610.

It is an arithmetic number, because the mean of its divisors is an integer number (3424960890).

Almost surely, 2^18252447454 is an apocalyptic number.

18252447454 is a deficient number, since it is larger than the sum of its proper divisors (9147239666).

18252447454 is a wasteful number, since it uses less digits than its factorization.

18252447454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7005314.

The product of its digits is 1433600, while the sum is 46.

The spelling of 18252447454 in words is "eighteen billion, two hundred fifty-two million, four hundred forty-seven thousand, four hundred fifty-four".