3521846389 has 2 divisors, whose sum is σ = 3521846390. Its totient is φ = 3521846388.

The previous prime is 3521846387. The next prime is 3521846423. The reversal of 3521846389 is 9836481253.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2977557489 + 544288900 = 54567^2 + 23330^2 .

It is a cyclic number.

It is not a de Polignac number, because 3521846389 - 2¹ = 3521846387 is a prime.

Together with 3521846387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3521846381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760923194 + 1760923195.

It is an arithmetic number, because the mean of its divisors is an integer number (1760923195).

Almost surely, 2^3521846389 is an apocalyptic number.

It is an amenable number.

3521846389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521846389 is an equidigital number, since it uses as much as digits as its factorization.

3521846389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 49.

The square root of 3521846389 is about 59345.1462968961. The cubic root of 3521846389 is about 1521.4469124188.

The spelling of 3521846389 in words is "three billion, five hundred twenty-one million, eight hundred forty-six thousand, three hundred eighty-nine".