1095199649 has 2 divisors, whose sum is σ = 1095199650. Its totient is φ = 1095199648.

The previous prime is 1095199631. The next prime is 1095199657. The reversal of 1095199649 is 9469915901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 575040400 + 520159249 = 23980^2 + 22807^2 .

It is a cyclic number.

It is not a de Polignac number, because 1095199649 - 2⁸ = 1095199393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1095199649.

It is not a weakly prime, because it can be changed into another prime (1095199669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547599824 + 547599825.

It is an arithmetic number, because the mean of its divisors is an integer number (547599825).

Almost surely, 2^1095199649 is an apocalyptic number.

It is an amenable number.

1095199649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1095199649 is an equidigital number, since it uses as much as digits as its factorization.

1095199649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 1095199649 is about 33093.8007638893. The cubic root of 1095199649 is about 1030.7763176814.

The spelling of 1095199649 in words is "one billion, ninety-five million, one hundred ninety-nine thousand, six hundred forty-nine".