1384666481 has 4 divisors (see below), whose sum is σ = 1510545264. Its totient is φ = 1258787700.

The previous prime is 1384666441. The next prime is 1384666487. The reversal of 1384666481 is 1846664831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1384666481 is a prime.

It is a super-2 number, since 2×1384666481² = 3834602527209846722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1384666487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62939375 + ... + 62939396.

It is an arithmetic number, because the mean of its divisors is an integer number (377636316).

Almost surely, 2^1384666481 is an apocalyptic number.

1384666481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1384666481 is a deficient number, since it is larger than the sum of its proper divisors (125878783).

1384666481 is a wasteful number, since it uses less digits than its factorization.

1384666481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125878782.

The product of its digits is 663552, while the sum is 47.

The square root of 1384666481 is about 37211.1069574663. The cubic root of 1384666481 is about 1114.5897881701.

The spelling of 1384666481 in words is "one billion, three hundred eighty-four million, six hundred sixty-six thousand, four hundred eighty-one".