1318864481 has 8 divisors (see below), whose sum is σ = 1472221344. Its totient is φ = 1171084320.

The previous prime is 1318864447. The next prime is 1318864483. The reversal of 1318864481 is 1844688131.

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

It is a cyclic number.

It is not a de Polignac number, because 1318864481 - 2¹⁰ = 1318863457 is a prime.

It is a super-2 number, since 2×1318864481² = 3478807038486798722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1318864483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393676 + ... + 1394621.

It is an arithmetic number, because the mean of its divisors is an integer number (184027668).

Almost surely, 2^1318864481 is an apocalyptic number.

1318864481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1318864481 is a deficient number, since it is larger than the sum of its proper divisors (153356863).

1318864481 is a wasteful number, since it uses less digits than its factorization.

1318864481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788351.

The product of its digits is 147456, while the sum is 44.

The square root of 1318864481 is about 36316.1738210401. The cubic root of 1318864481 is about 1096.6466696382.

The spelling of 1318864481 in words is "one billion, three hundred eighteen million, eight hundred sixty-four thousand, four hundred eighty-one".