1118454749 has 2 divisors, whose sum is σ = 1118454750. Its totient is φ = 1118454748.

The previous prime is 1118454739. The next prime is 1118454761. The reversal of 1118454749 is 9474548111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 917665849 + 200788900 = 30293^2 + 14170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118454749 - 2¹² = 1118450653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118454719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559227374 + 559227375.

It is an arithmetic number, because the mean of its divisors is an integer number (559227375).

Almost surely, 2^1118454749 is an apocalyptic number.

It is an amenable number.

1118454749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118454749 is an equidigital number, since it uses as much as digits as its factorization.

1118454749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 44.

The square root of 1118454749 is about 33443.3064902381. The cubic root of 1118454749 is about 1038.0209989651.

The spelling of 1118454749 in words is "one billion, one hundred eighteen million, four hundred fifty-four thousand, seven hundred forty-nine".