1868339437 has 2 divisors, whose sum is σ = 1868339438. Its totient is φ = 1868339436.

The previous prime is 1868339399. The next prime is 1868339453. The reversal of 1868339437 is 7349338681.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1342049956 + 526289481 = 36634^2 + 22941^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868339437 - 2¹⁵ = 1868306669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868339497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934169718 + 934169719.

It is an arithmetic number, because the mean of its divisors is an integer number (934169719).

Almost surely, 2^1868339437 is an apocalyptic number.

It is an amenable number.

1868339437 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868339437 is an equidigital number, since it uses as much as digits as its factorization.

1868339437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 52.

The square root of 1868339437 is about 43224.2922093584. The cubic root of 1868339437 is about 1231.6441838475.

The spelling of 1868339437 in words is "one billion, eight hundred sixty-eight million, three hundred thirty-nine thousand, four hundred thirty-seven".