18261380030 has 16 divisors (see below), whose sum is σ = 33060489984. Its totient is φ = 7262328480.

The previous prime is 18261380023. The next prime is 18261380063. The reversal of 18261380030 is 3008316281.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5276126 + ... + 5279585.

It is an arithmetic number, because the mean of its divisors is an integer number (2066280624).

Almost surely, 2^18261380030 is an apocalyptic number.

18261380030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18261380030 is a deficient number, since it is larger than the sum of its proper divisors (14799109954).

18261380030 is a wasteful number, since it uses less digits than its factorization.

18261380030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10555891.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 18261380030 in words is "eighteen billion, two hundred sixty-one million, three hundred eighty thousand, thirty".