20186226087 has 8 divisors (see below), whose sum is σ = 26915675136. Its totient is φ = 13457130552.

The previous prime is 20186226041. The next prime is 20186226089. The reversal of 20186226087 is 78062268102.

It is a happy number.

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

It is not a de Polignac number, because 20186226087 - 2⁸ = 20186225831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20186226089) 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 7 ways as a sum of consecutive naturals, for example, 105828 + ... + 227094.

It is an arithmetic number, because the mean of its divisors is an integer number (3364459392).

Almost surely, 2^20186226087 is an apocalyptic number.

20186226087 is a deficient number, since it is larger than the sum of its proper divisors (6729449049).

20186226087 is a wasteful number, since it uses less digits than its factorization.

20186226087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176757.

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 20186226087 in words is "twenty billion, one hundred eighty-six million, two hundred twenty-six thousand, eighty-seven".