1199797613 has 4 divisors (see below), whose sum is σ = 1371197280. Its totient is φ = 1028397948.

The previous prime is 1199797603. The next prime is 1199797649. The reversal of 1199797613 is 3167979911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1199797613 - 2⁴ = 1199797597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199797603) 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 in 3 ways as a sum of consecutive naturals, for example, 85699823 + ... + 85699836.

It is an arithmetic number, because the mean of its divisors is an integer number (342799320).

Almost surely, 2^1199797613 is an apocalyptic number.

It is an amenable number.

1199797613 is a deficient number, since it is larger than the sum of its proper divisors (171399667).

1199797613 is an equidigital number, since it uses as much as digits as its factorization.

1199797613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171399666.

The product of its digits is 642978, while the sum is 53.

The square root of 1199797613 is about 34638.0948234743. The cubic root of 1199797613 is about 1062.5988246349.

The spelling of 1199797613 in words is "one billion, one hundred ninety-nine million, seven hundred ninety-seven thousand, six hundred thirteen".