1363549889 has 8 divisors (see below), whose sum is σ = 1554817320. Its totient is φ = 1184622336.

The previous prime is 1363549861. The next prime is 1363549919. The reversal of 1363549889 is 9889453631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 415833664 + 947716225 = 20392^2 + 30785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1363549889 - 2⁸ = 1363549633 is a prime.

It is a super-4 number, since 4×1363549889⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1363549819) 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 in 7 ways as a sum of consecutive naturals, for example, 3084734 + ... + 3085175.

It is an arithmetic number, because the mean of its divisors is an integer number (194352165).

Almost surely, 2^1363549889 is an apocalyptic number.

It is an amenable number.

1363549889 is a deficient number, since it is larger than the sum of its proper divisors (191267431).

1363549889 is a wasteful number, since it uses less digits than its factorization.

1363549889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169939.

The product of its digits is 5598720, while the sum is 56.

The square root of 1363549889 is about 36926.2764031252. The cubic root of 1363549889 is about 1108.8947928502.

The spelling of 1363549889 in words is "one billion, three hundred sixty-three million, five hundred forty-nine thousand, eight hundred eighty-nine".