1364357561 has 4 divisors (see below), whose sum is σ = 1559265792. Its totient is φ = 1169449332.

The previous prime is 1364357557. The next prime is 1364357563. The reversal of 1364357561 is 1657534631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1364357561 - 2² = 1364357557 is a prime.

It is a super-2 number, since 2×1364357561² = 3722943108515737442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1364357563) 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, 97454105 + ... + 97454118.

It is an arithmetic number, because the mean of its divisors is an integer number (389816448).

Almost surely, 2^1364357561 is an apocalyptic number.

It is an amenable number.

1364357561 is a deficient number, since it is larger than the sum of its proper divisors (194908231).

1364357561 is an equidigital number, since it uses as much as digits as its factorization.

1364357561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194908230.

The product of its digits is 226800, while the sum is 41.

The square root of 1364357561 is about 36937.2110614757. The cubic root of 1364357561 is about 1109.1136936535.

The spelling of 1364357561 in words is "one billion, three hundred sixty-four million, three hundred fifty-seven thousand, five hundred sixty-one".