1361204663 has 24 divisors (see below), whose sum is σ = 1712571840. Its totient is φ = 1072370880.

The previous prime is 1361204641. The next prime is 1361204723. The reversal of 1361204663 is 3664021631.

It is not a de Polignac number, because 1361204663 - 2⁶ = 1361204599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361204563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 147773 + ... + 156713.

It is an arithmetic number, because the mean of its divisors is an integer number (71357160).

Almost surely, 2^1361204663 is an apocalyptic number.

1361204663 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1361204663 is a deficient number, since it is larger than the sum of its proper divisors (351367177).

1361204663 is a wasteful number, since it uses less digits than its factorization.

1361204663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9207 (or 9200 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1361204663 is about 36894.5072199101. The cubic root of 1361204663 is about 1108.2586833071.

The spelling of 1361204663 in words is "one billion, three hundred sixty-one million, two hundred four thousand, six hundred sixty-three".