18454387774 has 8 divisors (see below), whose sum is σ = 29309910048. Its totient is φ = 8684417760.

The previous prime is 18454387753. The next prime is 18454387817. The reversal of 18454387774 is 47778345481.

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

It is a super-2 number, since 2×18454387774² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271388022 + ... + 271388089.

It is an arithmetic number, because the mean of its divisors is an integer number (3663738756).

Almost surely, 2^18454387774 is an apocalyptic number.

18454387774 is a deficient number, since it is larger than the sum of its proper divisors (10855522274).

18454387774 is a wasteful number, since it uses less digits than its factorization.

18454387774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542776130.

The product of its digits is 21073920, while the sum is 58.

The spelling of 18454387774 in words is "eighteen billion, four hundred fifty-four million, three hundred eighty-seven thousand, seven hundred seventy-four".