3874936236445 has 4 divisors (see below), whose sum is σ = 4649923483740. Its totient is φ = 3099948989152.

The previous prime is 3874936236439. The next prime is 3874936236449. The reversal of 3874936236445 is 5446326394783.

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 774987951556 + 3099948284889 = 880334^2 + 1760667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3874936236445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3874936236449) 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, 387493623640 + ... + 387493623649.

It is an arithmetic number, because the mean of its divisors is an integer number (1162480870935).

Almost surely, 2^{3874936236445} is an apocalyptic number.

It is an amenable number.

3874936236445 is a deficient number, since it is larger than the sum of its proper divisors (774987247295).

3874936236445 is an equidigital number, since it uses as much as digits as its factorization.

3874936236445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774987247294.

The product of its digits is 313528320, while the sum is 64.

The spelling of 3874936236445 in words is "three trillion, eight hundred seventy-four billion, nine hundred thirty-six million, two hundred thirty-six thousand, four hundred forty-five".