1850037020021 has 4 divisors (see below), whose sum is σ = 1875379992972. Its totient is φ = 1824694047072.

The previous prime is 1850037019993. The next prime is 1850037020053. The reversal of 1850037020021 is 1200207300581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 864555934225 + 985481085796 = 929815^2 + 992714^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1850037020021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1850037022021) 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, 12671486366 + ... + 12671486511.

It is an arithmetic number, because the mean of its divisors is an integer number (468844998243).

Almost surely, 2^{1850037020021} is an apocalyptic number.

It is an amenable number.

1850037020021 is a deficient number, since it is larger than the sum of its proper divisors (25342972951).

1850037020021 is an equidigital number, since it uses as much as digits as its factorization.

1850037020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25342972950.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 1850037020021 in words is "one trillion, eight hundred fifty billion, thirty-seven million, twenty thousand, twenty-one".