20182154108 has 12 divisors (see below), whose sum is σ = 35668461192. Its totient is φ = 9991165200.

The previous prime is 20182154107. The next prime is 20182154117. The reversal of 20182154108 is 80145128102.

It is a super-2 number, since 2×20182154108² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20182154107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24977510 + ... + 24978317.

It is an arithmetic number, because the mean of its divisors is an integer number (2972371766).

Almost surely, 2^20182154108 is an apocalyptic number.

It is an amenable number.

20182154108 is a deficient number, since it is larger than the sum of its proper divisors (15486307084).

20182154108 is a wasteful number, since it uses less digits than its factorization.

20182154108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49955932 (or 49955930 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

The spelling of 20182154108 in words is "twenty billion, one hundred eighty-two million, one hundred fifty-four thousand, one hundred eight".