1368834749 has 2 divisors, whose sum is σ = 1368834750. Its totient is φ = 1368834748.

The previous prime is 1368834697. The next prime is 1368834757. The reversal of 1368834749 is 9474388631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1362126649 + 6708100 = 36907^2 + 2590^2 .

It is an emirp because it is prime and its reverse (9474388631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1368834749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1368834749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1368834799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 684417374 + 684417375.

It is an arithmetic number, because the mean of its divisors is an integer number (684417375).

Almost surely, 2^1368834749 is an apocalyptic number.

It is an amenable number.

1368834749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1368834749 is an equidigital number, since it uses as much as digits as its factorization.

1368834749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 53.

The square root of 1368834749 is about 36997.7668109847. The cubic root of 1368834749 is about 1110.3255677311.

The spelling of 1368834749 in words is "one billion, three hundred sixty-eight million, eight hundred thirty-four thousand, seven hundred forty-nine".