1368408481 has 24 divisors (see below), whose sum is σ = 1626175040. Its totient is φ = 1146610080.

The previous prime is 1368408463. The next prime is 1368408487. The reversal of 1368408481 is 1848048631.

It is not a de Polignac number, because 1368408481 - 2¹³ = 1368400289 is a prime.

It is a super-2 number, since 2×1368408481² = 3745083541745454722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1368408487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77020 + ... + 93106.

Almost surely, 2^1368408481 is an apocalyptic number.

1368408481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1368408481 is a deficient number, since it is larger than the sum of its proper divisors (257766559).

1368408481 is a wasteful number, since it uses less digits than its factorization.

1368408481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16165 (or 16154 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 1368408481 is about 36992.0056363534. The cubic root of 1368408481 is about 1110.2103004943.

The spelling of 1368408481 in words is "one billion, three hundred sixty-eight million, four hundred eight thousand, four hundred eighty-one".