18938905070 has 16 divisors (see below), whose sum is σ = 34091651520. Its totient is φ = 7575201504.

The previous prime is 18938905031. The next prime is 18938905087. The reversal of 18938905070 is 7050983981.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305204 + ... + 361976.

It is an arithmetic number, because the mean of its divisors is an integer number (2130728220).

Almost surely, 2^18938905070 is an apocalyptic number.

18938905070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18938905070 is a deficient number, since it is larger than the sum of its proper divisors (15152746450).

18938905070 is a wasteful number, since it uses less digits than its factorization.

18938905070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90139.

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 18938905070 in words is "eighteen billion, nine hundred thirty-eight million, nine hundred five thousand, seventy".