1097954149 has 2 divisors, whose sum is σ = 1097954150. Its totient is φ = 1097954148.

The previous prime is 1097954111. The next prime is 1097954167. The reversal of 1097954149 is 9414597901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 944640225 + 153313924 = 30735^2 + 12382^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097954149 - 2¹³ = 1097945957 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097957149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548977074 + 548977075.

It is an arithmetic number, because the mean of its divisors is an integer number (548977075).

Almost surely, 2^1097954149 is an apocalyptic number.

It is an amenable number.

1097954149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097954149 is an equidigital number, since it uses as much as digits as its factorization.

1097954149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 1097954149 is about 33135.3911852569. The cubic root of 1097954149 is about 1031.6397512327.

The spelling of 1097954149 in words is "one billion, ninety-seven million, nine hundred fifty-four thousand, one hundred forty-nine".