1801836587106 has 24 divisors (see below), whose sum is σ = 4009492226844. Its totient is φ = 584379433440.

The previous prime is 1801836587101. The next prime is 1801836587137. The reversal of 1801836587106 is 6017856381081.

1801836587106 is a `hidden beast` number, since 1 + 8 + 0 + 18 + 36 + 587 + 10 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1337041253025 + 464795334081 = 1156305^2 + 681759^2 .

It is not an unprimeable number, because it can be changed into a prime (1801836587101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1352729505 + ... + 1352730836.

Almost surely, 2^{1801836587106} is an apocalyptic number.

1801836587106 is an abundant number, since it is smaller than the sum of its proper divisors (2207655639738).

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

1801836587106 is a wasteful number, since it uses less digits than its factorization.

1801836587106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2705460386 (or 2705460383 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 1801836587106 in words is "one trillion, eight hundred one billion, eight hundred thirty-six million, five hundred eighty-seven thousand, one hundred six".