1388880833 has 2 divisors, whose sum is σ = 1388880834. Its totient is φ = 1388880832.

The previous prime is 1388880821. The next prime is 1388880839. The reversal of 1388880833 is 3380888831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1302632464 + 86248369 = 36092^2 + 9287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1388880833 - 2¹⁶ = 1388815297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1388880839) 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, 694440416 + 694440417.

It is an arithmetic number, because the mean of its divisors is an integer number (694440417).

Almost surely, 2^1388880833 is an apocalyptic number.

It is an amenable number.

1388880833 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388880833 is an equidigital number, since it uses as much as digits as its factorization.

1388880833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 1388880833 is about 37267.6915437487. The cubic root of 1388880833 is about 1115.7194263151.

The spelling of 1388880833 in words is "one billion, three hundred eighty-eight million, eight hundred eighty thousand, eight hundred thirty-three".