18003240794 has 48 divisors (see below), whose sum is σ = 34750997568. Its totient is φ = 6843144000.

The previous prime is 18003240767. The next prime is 18003240799. The reversal of 18003240794 is 49704230081.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18003240799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60152 + ... + 199059.

It is an arithmetic number, because the mean of its divisors is an integer number (723979116).

Almost surely, 2^18003240794 is an apocalyptic number.

18003240794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18003240794 is a deficient number, since it is larger than the sum of its proper divisors (16747756774).

18003240794 is a wasteful number, since it uses less digits than its factorization.

18003240794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259283 (or 259272 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 18003240794 in words is "eighteen billion, three million, two hundred forty thousand, seven hundred ninety-four".