1867825213 has 2 divisors, whose sum is σ = 1867825214. Its totient is φ = 1867825212.

The previous prime is 1867825177. The next prime is 1867825249. The reversal of 1867825213 is 3125287681.

It is a balanced prime because it is at equal distance from previous prime (1867825177) and next prime (1867825249).

It can be written as a sum of positive squares in only one way, i.e., 1604963844 + 262861369 = 40062^2 + 16213^2 .

It is an emirp because it is prime and its reverse (3125287681) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1867825213 - 2⁹ = 1867824701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1867825213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1867829213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 933912606 + 933912607.

It is an arithmetic number, because the mean of its divisors is an integer number (933912607).

Almost surely, 2^1867825213 is an apocalyptic number.

It is an amenable number.

1867825213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1867825213 is an equidigital number, since it uses as much as digits as its factorization.

1867825213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 43.

The square root of 1867825213 is about 43218.3434782038. The cubic root of 1867825213 is about 1231.5311781306.

The spelling of 1867825213 in words is "one billion, eight hundred sixty-seven million, eight hundred twenty-five thousand, two hundred thirteen".