1381634699 has 2 divisors, whose sum is σ = 1381634700. Its totient is φ = 1381634698.

The previous prime is 1381634641. The next prime is 1381634707. The reversal of 1381634699 is 9964361831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381634699 is a prime.

It is not a weakly prime, because it can be changed into another prime (1381634399) 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, 690817349 + 690817350.

It is an arithmetic number, because the mean of its divisors is an integer number (690817350).

Almost surely, 2^1381634699 is an apocalyptic number.

1381634699 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381634699 is an equidigital number, since it uses as much as digits as its factorization.

1381634699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 50.

The square root of 1381634699 is about 37170.3470390041. The cubic root of 1381634699 is about 1113.7757142637.

The spelling of 1381634699 in words is "one billion, three hundred eighty-one million, six hundred thirty-four thousand, six hundred ninety-nine".