18905073390507 has 8 divisors (see below), whose sum is σ = 25230748125760. Its totient is φ = 12591390457800.

The previous prime is 18905073390487. The next prime is 18905073390509. The reversal of 18905073390507 is 70509337050981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18905073390507 - 2¹⁴ = 18905073374123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18905073390509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2997946957 + ... + 2997953262.

It is an arithmetic number, because the mean of its divisors is an integer number (3153843515720).

Almost surely, 2^{18905073390507} is an apocalyptic number.

18905073390507 is a deficient number, since it is larger than the sum of its proper divisors (6325674735253).

18905073390507 is a wasteful number, since it uses less digits than its factorization.

18905073390507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5995901273.

The product of its (nonzero) digits is 7144200, while the sum is 57.

The spelling of 18905073390507 in words is "eighteen trillion, nine hundred five billion, seventy-three million, three hundred ninety thousand, five hundred seven".