1268820195 has 8 divisors (see below), whose sum is σ = 2030112336. Its totient is φ = 676704096.

The previous prime is 1268820181. The next prime is 1268820251. The reversal of 1268820195 is 5910288621.

It is a happy number.

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

It is not a de Polignac number, because 1268820195 - 2¹⁹ = 1268295907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42293992 + ... + 42294021.

It is an arithmetic number, because the mean of its divisors is an integer number (253764042).

Almost surely, 2^1268820195 is an apocalyptic number.

1268820195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1268820195 is a deficient number, since it is larger than the sum of its proper divisors (761292141).

1268820195 is an equidigital number, since it uses as much as digits as its factorization.

1268820195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84588021.

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1268820195 is about 35620.5024529413. The cubic root of 1268820195 is about 1082.5966880587.

The spelling of 1268820195 in words is "one billion, two hundred sixty-eight million, eight hundred twenty thousand, one hundred ninety-five".