1199661315 has 8 divisors (see below), whose sum is σ = 1919458128. Its totient is φ = 639819360.

The previous prime is 1199661283. The next prime is 1199661317. The reversal of 1199661315 is 5131669911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1199661315 - 2⁵ = 1199661283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1199661317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39988696 + ... + 39988725.

It is an arithmetic number, because the mean of its divisors is an integer number (239932266).

Almost surely, 2^1199661315 is an apocalyptic number.

1199661315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1199661315 is a deficient number, since it is larger than the sum of its proper divisors (719796813).

1199661315 is an equidigital number, since it uses as much as digits as its factorization.

1199661315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79977429.

The product of its digits is 43740, while the sum is 42.

The square root of 1199661315 is about 34636.1273095016. The cubic root of 1199661315 is about 1062.5585857430.

The spelling of 1199661315 in words is "one billion, one hundred ninety-nine million, six hundred sixty-one thousand, three hundred fifteen".