1197813903 has 32 divisors (see below), whose sum is σ = 1975061760. Its totient is φ = 634832640.

The previous prime is 1197813871. The next prime is 1197813943. The reversal of 1197813903 is 3093187911.

It is not a de Polignac number, because 1197813903 - 2⁵ = 1197813871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197813943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65326 + ... + 81627.

It is an arithmetic number, because the mean of its divisors is an integer number (61720680).

Almost surely, 2^1197813903 is an apocalyptic number.

1197813903 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1197813903 is a deficient number, since it is larger than the sum of its proper divisors (777247857).

1197813903 is a wasteful number, since it uses less digits than its factorization.

1197813903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146999.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 1197813903 is about 34609.4481753177. The cubic root of 1197813903 is about 1062.0128783980.

The spelling of 1197813903 in words is "one billion, one hundred ninety-seven million, eight hundred thirteen thousand, nine hundred three".