926143649 has 2 divisors, whose sum is σ = 926143650. Its totient is φ = 926143648.

The previous prime is 926143637. The next prime is 926143651. The reversal of 926143649 is 946341629.

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., 639078400 + 287065249 = 25280^2 + 16943^2 .

It is an emirp because it is prime and its reverse (946341629) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 926143649 - 2¹⁶ = 926078113 is a prime.

Together with 926143651, 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 (926143609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 463071824 + 463071825.

It is an arithmetic number, because the mean of its divisors is an integer number (463071825).

Almost surely, 2^926143649 is an apocalyptic number.

It is an amenable number.

926143649 is a deficient number, since it is larger than the sum of its proper divisors (1).

926143649 is an equidigital number, since it uses as much as digits as its factorization.

926143649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 926143649 is about 30432.6083173953. The cubic root of 926143649 is about 974.7489685529.

The spelling of 926143649 in words is "nine hundred twenty-six million, one hundred forty-three thousand, six hundred forty-nine".