1338700387 has 2 divisors, whose sum is σ = 1338700388. Its totient is φ = 1338700386.

The previous prime is 1338700361. The next prime is 1338700399. The reversal of 1338700387 is 7830078331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1338700387 - 2²³ = 1330311779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1338700787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669350193 + 669350194.

It is an arithmetic number, because the mean of its divisors is an integer number (669350194).

Almost surely, 2^1338700387 is an apocalyptic number.

1338700387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338700387 is an equidigital number, since it uses as much as digits as its factorization.

1338700387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 1338700387 is about 36588.2547684363. The cubic root of 1338700387 is about 1102.1172409281.

The spelling of 1338700387 in words is "one billion, three hundred thirty-eight million, seven hundred thousand, three hundred eighty-seven".