1268011378 has 8 divisors (see below), whose sum is σ = 1909909980. Its totient is φ = 631374720.

The previous prime is 1268011369. The next prime is 1268011403. The reversal of 1268011378 is 8731108621.

It can be written as a sum of positive squares in 2 ways, for example, as 1243479169 + 24532209 = 35263^2 + 4953^2 .

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, 1314883 + ... + 1315846.

Almost surely, 2^1268011378 is an apocalyptic number.

1268011378 is a deficient number, since it is larger than the sum of its proper divisors (641898602).

1268011378 is a wasteful number, since it uses less digits than its factorization.

1268011378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630972.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1268011378 is about 35609.1473922081. The cubic root of 1268011378 is about 1082.3666032572.

Adding to 1268011378 its reverse (8731108621), we get a palindrome (9999119999).

The spelling of 1268011378 in words is "one billion, two hundred sixty-eight million, eleven thousand, three hundred seventy-eight".