1388233051 has 2 divisors, whose sum is σ = 1388233052. Its totient is φ = 1388233050.

The previous prime is 1388233009. The next prime is 1388233079. The reversal of 1388233051 is 1503328831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1388233051 - 2⁹ = 1388232539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1388232998 and 1388233016.

It is not a weakly prime, because it can be changed into another prime (1388233151) 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 as a sum of consecutive naturals, namely, 694116525 + 694116526.

It is an arithmetic number, because the mean of its divisors is an integer number (694116526).

Almost surely, 2^1388233051 is an apocalyptic number.

1388233051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388233051 is an equidigital number, since it uses as much as digits as its factorization.

1388233051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1388233051 is about 37258.9995974127. Note that the first 3 decimals coincide. The cubic root of 1388233051 is about 1115.5459400238.

The spelling of 1388233051 in words is "one billion, three hundred eighty-eight million, two hundred thirty-three thousand, fifty-one".