1383862553 has 4 divisors (see below), whose sum is σ = 1383973668. Its totient is φ = 1383751440.

The previous prime is 1383862547. The next prime is 1383862559. The reversal of 1383862553 is 3552683831.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3552683831 = 29 ⋅122506339.

It is an interprime number because it is at equal distance from previous prime (1383862547) and next prime (1383862559).

It can be written as a sum of positive squares in 2 ways, for example, as 688380169 + 695482384 = 26237^2 + 26372^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383862553 - 2²⁸ = 1115427097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383862559) 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, 34118 + ... + 62703.

It is an arithmetic number, because the mean of its divisors is an integer number (345993417).

Almost surely, 2^1383862553 is an apocalyptic number.

It is an amenable number.

1383862553 is a deficient number, since it is larger than the sum of its proper divisors (111115).

1383862553 is an equidigital number, since it uses as much as digits as its factorization.

1383862553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111114.

The product of its digits is 518400, while the sum is 44.

The square root of 1383862553 is about 37200.3031304854. The cubic root of 1383862553 is about 1114.3740386446.

The spelling of 1383862553 in words is "one billion, three hundred eighty-three million, eight hundred sixty-two thousand, five hundred fifty-three".