20196346158 has 24 divisors (see below), whose sum is σ = 43914486096. Its totient is φ = 6708156000.

The previous prime is 20196346099. The next prime is 20196346189. The reversal of 20196346158 is 85164369102.

20196346158 is a `hidden beast` number, since 2 + 0 + 1 + 9 + 634 + 6 + 1 + 5 + 8 = 666.

It is a super-2 number, since 2×20196346158² (a number of 21 digits) contains 22 as substring.

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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1991418 + ... + 2001533.

It is an arithmetic number, because the mean of its divisors is an integer number (1829770254).

Almost surely, 2^20196346158 is an apocalyptic number.

20196346158 is an abundant number, since it is smaller than the sum of its proper divisors (23718139938).

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

20196346158 is a wasteful number, since it uses less digits than its factorization.

20196346158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993240 (or 3993237 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 20196346158 in words is "twenty billion, one hundred ninety-six million, three hundred forty-six thousand, one hundred fifty-eight".