18190424636 has 24 divisors (see below), whose sum is σ = 32148763920. Its totient is φ = 9005501312.

The previous prime is 18190424597. The next prime is 18190424641. The reversal of 18190424636 is 63642409181.

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 7 ways as a sum of consecutive naturals, for example, 112310 + ... + 221346.

It is an arithmetic number, because the mean of its divisors is an integer number (1339531830).

Almost surely, 2^18190424636 is an apocalyptic number.

It is an amenable number.

18190424636 is a deficient number, since it is larger than the sum of its proper divisors (13958339284).

18190424636 is a wasteful number, since it uses less digits than its factorization.

18190424636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109453 (or 109451 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 18190424636 in words is "eighteen billion, one hundred ninety million, four hundred twenty-four thousand, six hundred thirty-six".