1820010100158 has 12 divisors (see below), whose sum is σ = 3943355217048. Its totient is φ = 606670033380.

The previous prime is 1820010100157. The next prime is 1820010100213. The reversal of 1820010100158 is 8510010100281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820010100157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50555836098 + ... + 50555836133.

It is an arithmetic number, because the mean of its divisors is an integer number (328612934754).

Almost surely, 2^{1820010100158} is an apocalyptic number.

1820010100158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1820010100158 is an abundant number, since it is smaller than the sum of its proper divisors (2123345116890).

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

1820010100158 is a wasteful number, since it uses less digits than its factorization.

1820010100158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101111672239 (or 101111672236 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 27.

The spelling of 1820010100158 in words is "one trillion, eight hundred twenty billion, ten million, one hundred thousand, one hundred fifty-eight".