10018281919 has 4 divisors (see below), whose sum is σ = 10115546896. Its totient is φ = 9921016944.

The previous prime is 10018281907. The next prime is 10018281937. The reversal of 10018281919 is 91918281001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10018281919 is a prime.

It is a super-2 number, since 2×10018281919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10018281319) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 48632334 + ... + 48632539.

It is an arithmetic number, because the mean of its divisors is an integer number (2528886724).

Almost surely, 2^10018281919 is an apocalyptic number.

10018281919 is a deficient number, since it is larger than the sum of its proper divisors (97264977).

10018281919 is an equidigital number, since it uses as much as digits as its factorization.

10018281919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97264976.

The product of its (nonzero) digits is 10368, while the sum is 40.

The spelling of 10018281919 in words is "ten billion, eighteen million, two hundred eighty-one thousand, nine hundred nineteen".