1820010100156 has 24 divisors (see below), whose sum is σ = 3224624634000. Its totient is φ = 898697165952.

The previous prime is 1820010100133. The next prime is 1820010100157. The reversal of 1820010100156 is 6510010100281.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1820010100156.

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 7 ways as a sum of consecutive naturals, for example, 178531 + ... + 1916218.

It is an arithmetic number, because the mean of its divisors is an integer number (134359359750).

Almost surely, 2^{1820010100156} is an apocalyptic number.

It is an amenable number.

1820010100156 is a deficient number, since it is larger than the sum of its proper divisors (1404614533844).

1820010100156 is a wasteful number, since it uses less digits than its factorization.

1820010100156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097453 (or 2097451 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 25.

The spelling of 1820010100156 in words is "one trillion, eight hundred twenty billion, ten million, one hundred thousand, one hundred fifty-six".