814613749 has 2 divisors, whose sum is σ = 814613750. Its totient is φ = 814613748.

The previous prime is 814613717. The next prime is 814613759. The reversal of 814613749 is 947316418.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 469025649 + 345588100 = 21657^2 + 18590^2 .

It is a cyclic number.

It is not a de Polignac number, because 814613749 - 2⁵ = 814613717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (814613759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407306874 + 407306875.

It is an arithmetic number, because the mean of its divisors is an integer number (407306875).

Almost surely, 2^814613749 is an apocalyptic number.

It is an amenable number.

814613749 is a deficient number, since it is larger than the sum of its proper divisors (1).

814613749 is an equidigital number, since it uses as much as digits as its factorization.

814613749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 814613749 is about 28541.4391543244. The cubic root of 814613749 is about 933.9362774000.

The spelling of 814613749 in words is "eight hundred fourteen million, six hundred thirteen thousand, seven hundred forty-nine".