3862638850421 has 4 divisors (see below), whose sum is σ = 4159764915852. Its totient is φ = 3565512784992.

The previous prime is 3862638850417. The next prime is 3862638850519. The reversal of 3862638850421 is 1240588362683.

3862638850421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 410329924900 + 3452308925521 = 640570^2 + 1858039^2 .

It is a cyclic number.

It is not a de Polignac number, because 3862638850421 - 2² = 3862638850417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3862638850121) 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, 148563032696 + ... + 148563032721.

It is an arithmetic number, because the mean of its divisors is an integer number (1039941228963).

Almost surely, 2^{3862638850421} is an apocalyptic number.

It is an amenable number.

3862638850421 is a deficient number, since it is larger than the sum of its proper divisors (297126065431).

3862638850421 is a wasteful number, since it uses less digits than its factorization.

3862638850421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297126065430.

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 3862638850421 in words is "three trillion, eight hundred sixty-two billion, six hundred thirty-eight million, eight hundred fifty thousand, four hundred twenty-one".