1859067641 has 2 divisors, whose sum is σ = 1859067642. Its totient is φ = 1859067640.

The previous prime is 1859067629. The next prime is 1859067643. The reversal of 1859067641 is 1467609581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1536326416 + 322741225 = 39196^2 + 17965^2 .

It is an emirp because it is prime and its reverse (1467609581) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1859067641 is a prime.

It is a super-2 number, since 2×1859067641² = 6912264987626609762, which contains 22 as substring.

Together with 1859067643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1859067643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 929533820 + 929533821.

It is an arithmetic number, because the mean of its divisors is an integer number (929533821).

Almost surely, 2^1859067641 is an apocalyptic number.

It is an amenable number.

1859067641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1859067641 is an equidigital number, since it uses as much as digits as its factorization.

1859067641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1859067641 is about 43116.9066724411. The cubic root of 1859067641 is about 1229.6034240481.

The spelling of 1859067641 in words is "one billion, eight hundred fifty-nine million, sixty-seven thousand, six hundred forty-one".