18224429554 has 8 divisors (see below), whose sum is σ = 27353723868. Its totient is φ = 9106521600.

The previous prime is 18224429551. The next prime is 18224429581. The reversal of 18224429554 is 45592442281.

It can be written as a sum of positive squares in 2 ways, for example, as 14067146025 + 4157283529 = 118605^2 + 64477^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18224429551) 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, 2842587 + ... + 2848990.

Almost surely, 2^18224429554 is an apocalyptic number.

18224429554 is a deficient number, since it is larger than the sum of its proper divisors (9129294314).

18224429554 is a wasteful number, since it uses less digits than its factorization.

18224429554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693180.

The product of its digits is 921600, while the sum is 46.

The spelling of 18224429554 in words is "eighteen billion, two hundred twenty-four million, four hundred twenty-nine thousand, five hundred fifty-four".