18420901448 has 16 divisors (see below), whose sum is σ = 34541088000. Its totient is φ = 9209944656.

The previous prime is 18420901423. The next prime is 18420901453. The reversal of 18420901448 is 84410902481.

It is a happy number.

It is a super-2 number, since 2×18420901448² (a number of 21 digits) contains 22 as substring.

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, 124073 + ... + 228551.

It is an arithmetic number, because the mean of its divisors is an integer number (2158818000).

Almost surely, 2^18420901448 is an apocalyptic number.

It is an amenable number.

18420901448 is a deficient number, since it is larger than the sum of its proper divisors (16120186552).

18420901448 is a wasteful number, since it uses less digits than its factorization.

18420901448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126524 (or 126520 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 18420901448 in words is "eighteen billion, four hundred twenty million, nine hundred one thousand, four hundred forty-eight".