1163563365 has 8 divisors (see below), whose sum is σ = 1861701408. Its totient is φ = 620567120.

The previous prime is 1163563333. The next prime is 1163563381. The reversal of 1163563365 is 5633653611.

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

It is not a de Polignac number, because 1163563365 - 2⁵ = 1163563333 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38785431 + ... + 38785460.

It is an arithmetic number, because the mean of its divisors is an integer number (232712676).

Almost surely, 2^1163563365 is an apocalyptic number.

1163563365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1163563365 is a deficient number, since it is larger than the sum of its proper divisors (698138043).

1163563365 is an equidigital number, since it uses as much as digits as its factorization.

1163563365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77570899.

The product of its digits is 145800, while the sum is 39.

The square root of 1163563365 is about 34111.0446190087. The cubic root of 1163563365 is about 1051.7923627105.

The spelling of 1163563365 in words is "one billion, one hundred sixty-three million, five hundred sixty-three thousand, three hundred sixty-five".