1468247778 has 12 divisors (see below), whose sum is σ = 3181203558. Its totient is φ = 489415920.

The previous prime is 1468247777. The next prime is 1468247791. The reversal of 1468247778 is 8777428641.

It can be written as a sum of positive squares in only one way, i.e., 1185906969 + 282340809 = 34437^2 + 16803^2 .

It is not an unprimeable number, because it can be changed into a prime (1468247777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40784643 + ... + 40784678.

Almost surely, 2^1468247778 is an apocalyptic number.

1468247778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1468247778 is an abundant number, since it is smaller than the sum of its proper divisors (1712955780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1468247778 is a wasteful number, since it uses less digits than its factorization.

1468247778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81569329 (or 81569326 counting only the distinct ones).

The product of its digits is 4214784, while the sum is 54.

The square root of 1468247778 is about 38317.7214614857. The cubic root of 1468247778 is about 1136.5794096964.

The spelling of 1468247778 in words is "one billion, four hundred sixty-eight million, two hundred forty-seven thousand, seven hundred seventy-eight".