1363987616 has 24 divisors (see below), whose sum is σ = 2713040820. Its totient is φ = 674961408.

The previous prime is 1363987613. The next prime is 1363987619. The reversal of 1363987616 is 6167893631.

It is an interprime number because it is at equal distance from previous prime (1363987613) and next prime (1363987619).

It can be written as a sum of positive squares in 2 ways, for example, as 1303210000 + 60777616 = 36100^2 + 7796^2 .

It is not an unprimeable number, because it can be changed into a prime (1363987613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216611 + ... + 222818.

Almost surely, 2^1363987616 is an apocalyptic number.

1363987616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1363987616 is a deficient number, since it is larger than the sum of its proper divisors (1349053204).

1363987616 is an equidigital number, since it uses as much as digits as its factorization.

1363987616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439536 (or 439528 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The square root of 1363987616 is about 36932.2029670584. The cubic root of 1363987616 is about 1109.0134393488.

The spelling of 1363987616 in words is "one billion, three hundred sixty-three million, nine hundred eighty-seven thousand, six hundred sixteen".