1363579961 has 2 divisors, whose sum is σ = 1363579962. Its totient is φ = 1363579960.

The previous prime is 1363579957. The next prime is 1363579967. The reversal of 1363579961 is 1699753631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 904806400 + 458773561 = 30080^2 + 21419^2 .

It is an emirp because it is prime and its reverse (1699753631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1363579961 - 2² = 1363579957 is a prime.

It is not a weakly prime, because it can be changed into another prime (1363579967) 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, 681789980 + 681789981.

It is an arithmetic number, because the mean of its divisors is an integer number (681789981).

Almost surely, 2^1363579961 is an apocalyptic number.

It is an amenable number.

1363579961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1363579961 is an equidigital number, since it uses as much as digits as its factorization.

1363579961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 50.

The square root of 1363579961 is about 36926.6835905961. The cubic root of 1363579961 is about 1108.9029447189.

The spelling of 1363579961 in words is "one billion, three hundred sixty-three million, five hundred seventy-nine thousand, nine hundred sixty-one".