18540601038 has 12 divisors (see below), whose sum is σ = 40171302288. Its totient is φ = 6180200340.

The previous prime is 18540600989. The next prime is 18540601043. The reversal of 18540601038 is 83010604581.

18540601038 is a `hidden beast` number, since 1 + 8 + 5 + 40 + 601 + 0 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18540600993 and 18540601011.

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 5 ways as a sum of consecutive naturals, for example, 515016678 + ... + 515016713.

It is an arithmetic number, because the mean of its divisors is an integer number (3347608524).

Almost surely, 2^18540601038 is an apocalyptic number.

18540601038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18540601038 is an abundant number, since it is smaller than the sum of its proper divisors (21630701250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18540601038 is a wasteful number, since it uses less digits than its factorization.

18540601038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030033399 (or 1030033396 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 18540601038 in words is "eighteen billion, five hundred forty million, six hundred one thousand, thirty-eight".