1863040362121 has 4 divisors (see below), whose sum is σ = 1867117037332. Its totient is φ = 1858963686912.

The previous prime is 1863040362091. The next prime is 1863040362133. The reversal of 1863040362121 is 1212630403681.

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 1276990401600 + 586049960521 = 1130040^2 + 765539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1863040362121 - 2¹³ = 1863040353929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1863040362151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2038336920 + ... + 2038337833.

It is an arithmetic number, because the mean of its divisors is an integer number (466779259333).

Almost surely, 2^{1863040362121} is an apocalyptic number.

It is an amenable number.

1863040362121 is a deficient number, since it is larger than the sum of its proper divisors (4076675211).

1863040362121 is an equidigital number, since it uses as much as digits as its factorization.

1863040362121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4076675210.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 1863040362121 in words is "one trillion, eight hundred sixty-three billion, forty million, three hundred sixty-two thousand, one hundred twenty-one".