1098863797 has 2 divisors, whose sum is σ = 1098863798. Its totient is φ = 1098863796.

The previous prime is 1098863767. The next prime is 1098863819. The reversal of 1098863797 is 7973688901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 875331396 + 223532401 = 29586^2 + 14951^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098863797 - 2⁷ = 1098863669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098863747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549431898 + 549431899.

It is an arithmetic number, because the mean of its divisors is an integer number (549431899).

Almost surely, 2^1098863797 is an apocalyptic number.

It is an amenable number.

1098863797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098863797 is an equidigital number, since it uses as much as digits as its factorization.

1098863797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 58.

The square root of 1098863797 is about 33149.1145733940. The cubic root of 1098863797 is about 1031.9245749039.

The spelling of 1098863797 in words is "one billion, ninety-eight million, eight hundred sixty-three thousand, seven hundred ninety-seven".