1268417378 has 8 divisors (see below), whose sum is σ = 1904798172. Its totient is φ = 633484656.

The previous prime is 1268417351. The next prime is 1268417389. The reversal of 1268417378 is 8737148621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1045422889 + 222994489 = 32333^2 + 14933^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359825 + ... + 363332.

Almost surely, 2^1268417378 is an apocalyptic number.

1268417378 is a deficient number, since it is larger than the sum of its proper divisors (636380794).

1268417378 is an equidigital number, since it uses as much as digits as its factorization.

1268417378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724036.

The product of its digits is 451584, while the sum is 47.

The square root of 1268417378 is about 35614.8477183323. The cubic root of 1268417378 is about 1082.4821106193.

The spelling of 1268417378 in words is "one billion, two hundred sixty-eight million, four hundred seventeen thousand, three hundred seventy-eight".