1361434305 has 128 divisors (see below), whose sum is σ = 2805682176. Its totient is φ = 547430400.

The previous prime is 1361434231. The next prime is 1361434313. The reversal of 1361434305 is 5034341631.

It is not a de Polignac number, because 1361434305 - 2⁷ = 1361434177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5648985 + ... + 5649225.

It is an arithmetic number, because the mean of its divisors is an integer number (21919392).

Almost surely, 2^1361434305 is an apocalyptic number.

1361434305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361434305 is an abundant number, since it is smaller than the sum of its proper divisors (1444247871).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361434305 is a wasteful number, since it uses less digits than its factorization.

1361434305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1361434305 is about 36897.6192321402. The cubic root of 1361434305 is about 1108.3210027208.

Adding to 1361434305 its reverse (5034341631), we get a palindrome (6395775936).

The spelling of 1361434305 in words is "one billion, three hundred sixty-one million, four hundred thirty-four thousand, three hundred five".