18361934 has 4 divisors (see below), whose sum is σ = 27542904. Its totient is φ = 9180966.

The previous prime is 18361897. The next prime is 18361957. The reversal of 18361934 is 43916381.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 18361894 and 18361903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4590482 + ... + 4590485.

It is an arithmetic number, because the mean of its divisors is an integer number (6885726).

Almost surely, 2^18361934 is an apocalyptic number.

18361934 is a deficient number, since it is larger than the sum of its proper divisors (9180970).

18361934 is an equidigital number, since it uses as much as digits as its factorization.

18361934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9180969.

The product of its digits is 15552, while the sum is 35.

The square root of 18361934 is about 4285.0827296565. The cubic root of 18361934 is about 263.8190430419.

The spelling of 18361934 in words is "eighteen million, three hundred sixty-one thousand, nine hundred thirty-four".