1198265913 has 64 divisors (see below), whose sum is σ = 2022048000. Its totient is φ = 695236608.

The previous prime is 1198265911. The next prime is 1198265941. The reversal of 1198265913 is 3195628911.

It is not a de Polignac number, because 1198265913 - 2¹ = 1198265911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1198265911) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2353903 + ... + 2354411.

It is an arithmetic number, because the mean of its divisors is an integer number (31594500).

Almost surely, 2^1198265913 is an apocalyptic number.

1198265913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1198265913 is a deficient number, since it is larger than the sum of its proper divisors (823782087).

1198265913 is a wasteful number, since it uses less digits than its factorization.

1198265913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 897 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 1198265913 is about 34615.9777126113. The cubic root of 1198265913 is about 1062.1464495283.

The spelling of 1198265913 in words is "one billion, one hundred ninety-eight million, two hundred sixty-five thousand, nine hundred thirteen".