808146749 has 2 divisors, whose sum is σ = 808146750. Its totient is φ = 808146748.

The previous prime is 808146721. The next prime is 808146751. The reversal of 808146749 is 947641808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 640444249 + 167702500 = 25307^2 + 12950^2 .

It is a cyclic number.

It is not a de Polignac number, because 808146749 - 2¹² = 808142653 is a prime.

Together with 808146751, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808146709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404073374 + 404073375.

It is an arithmetic number, because the mean of its divisors is an integer number (404073375).

Almost surely, 2^808146749 is an apocalyptic number.

It is an amenable number.

808146749 is a deficient number, since it is larger than the sum of its proper divisors (1).

808146749 is an equidigital number, since it uses as much as digits as its factorization.

808146749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 808146749 is about 28427.9219958125. The cubic root of 808146749 is about 931.4582852339.

The spelling of 808146749 in words is "eight hundred eight million, one hundred forty-six thousand, seven hundred forty-nine".