1384497557 has 2 divisors, whose sum is σ = 1384497558. Its totient is φ = 1384497556.

The previous prime is 1384497533. The next prime is 1384497593. The reversal of 1384497557 is 7557944831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 934463761 + 450033796 = 30569^2 + 21214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1384497557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1384497499 and 1384497508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1384497157) 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 as a sum of consecutive naturals, namely, 692248778 + 692248779.

It is an arithmetic number, because the mean of its divisors is an integer number (692248779).

Almost surely, 2^1384497557 is an apocalyptic number.

It is an amenable number.

1384497557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1384497557 is an equidigital number, since it uses as much as digits as its factorization.

1384497557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4233600, while the sum is 53.

The square root of 1384497557 is about 37208.8370820696. The cubic root of 1384497557 is about 1114.5444611004.

The spelling of 1384497557 in words is "one billion, three hundred eighty-four million, four hundred ninety-seven thousand, five hundred fifty-seven".