1278968486 has 8 divisors (see below), whose sum is σ = 1933559040. Its totient is φ = 634448808.

The previous prime is 1278968461. The next prime is 1278968503. The reversal of 1278968486 is 6848698721.

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

It is a super-2 number, since 2×1278968486² = 3271520776362264392, which contains 22 as substring.

It is a congruent number.

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, 2517401 + ... + 2517908.

It is an arithmetic number, because the mean of its divisors is an integer number (241694880).

Almost surely, 2^1278968486 is an apocalyptic number.

1278968486 is a deficient number, since it is larger than the sum of its proper divisors (654590554).

1278968486 is a wasteful number, since it uses less digits than its factorization.

1278968486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5035438.

The product of its digits is 9289728, while the sum is 59.

The square root of 1278968486 is about 35762.6688881017. The cubic root of 1278968486 is about 1085.4753057791.

The spelling of 1278968486 in words is "one billion, two hundred seventy-eight million, nine hundred sixty-eight thousand, four hundred eighty-six".