18091023734 has 24 divisors (see below), whose sum is σ = 31627668888. Its totient is φ = 7738392480.

The previous prime is 18091023701. The next prime is 18091023761. The reversal of 18091023734 is 43732019081.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126104 + ... + 228219.

It is an arithmetic number, because the mean of its divisors is an integer number (1317819537).

Almost surely, 2^18091023734 is an apocalyptic number.

18091023734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18091023734 is a deficient number, since it is larger than the sum of its proper divisors (13536645154).

18091023734 is a wasteful number, since it uses less digits than its factorization.

18091023734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354860 (or 354853 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 18091023734 in words is "eighteen billion, ninety-one million, twenty-three thousand, seven hundred thirty-four".