1098783173 has 2 divisors, whose sum is σ = 1098783174. Its totient is φ = 1098783172.

The previous prime is 1098783143. The next prime is 1098783187. The reversal of 1098783173 is 3713878901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 727758529 + 371024644 = 26977^2 + 19262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098783173 - 2⁸ = 1098782917 is a prime.

It is a super-2 number, since 2×1098783173² = 2414648922535895858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1098783143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549391586 + 549391587.

It is an arithmetic number, because the mean of its divisors is an integer number (549391587).

Almost surely, 2^1098783173 is an apocalyptic number.

It is an amenable number.

1098783173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1098783173 is an equidigital number, since it uses as much as digits as its factorization.

1098783173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 1098783173 is about 33147.8984703405. The cubic root of 1098783173 is about 1031.8993367376.

The spelling of 1098783173 in words is "one billion, ninety-eight million, seven hundred eighty-three thousand, one hundred seventy-three".