1384664831 has 6 divisors (see below), whose sum is σ = 1521987096. Its totient is φ = 1258786100.

The previous prime is 1384664821. The next prime is 1384664867.

1384664831 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1384664831 - 2²² = 1380470527 is a prime.

It is a super-2 number, since 2×1384664831² = 3834593388416517122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1384664821) 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, 5721635 + ... + 5721876.

It is an arithmetic number, because the mean of its divisors is an integer number (253664516).

Almost surely, 2^1384664831 is an apocalyptic number.

1384664831 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1384664831 is a deficient number, since it is larger than the sum of its proper divisors (137322265).

1384664831 is a wasteful number, since it uses less digits than its factorization.

1384664831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11443533 (or 11443522 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 1384664831 is about 37211.0847866600. The cubic root of 1384664831 is about 1114.5893454464.

The spelling of 1384664831 in words is "one billion, three hundred eighty-four million, six hundred sixty-four thousand, eight hundred thirty-one".