1388676623 has 2 divisors, whose sum is σ = 1388676624. Its totient is φ = 1388676622.

The previous prime is 1388676613. The next prime is 1388676631. The reversal of 1388676623 is 3266768831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1388676623 - 2⁴ = 1388676607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1388676613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694338311 + 694338312.

It is an arithmetic number, because the mean of its divisors is an integer number (694338312).

Almost surely, 2^1388676623 is an apocalyptic number.

1388676623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388676623 is an equidigital number, since it uses as much as digits as its factorization.

1388676623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 1388676623 is about 37264.9516704369. The cubic root of 1388676623 is about 1115.6647414624.

It can be divided in two parts, 13886 and 76623, that added together give a palindrome (90509).

The spelling of 1388676623 in words is "one billion, three hundred eighty-eight million, six hundred seventy-six thousand, six hundred twenty-three".