1361561141 has 8 divisors (see below), whose sum is σ = 1365341184. Its totient is φ = 1357787920.

The previous prime is 1361561057. The next prime is 1361561171. The reversal of 1361561141 is 1411651631.

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

It is a cyclic number.

It is not a de Polignac number, because 1361561141 - 2²⁶ = 1294452277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361561171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914900 + ... + 916386.

It is an arithmetic number, because the mean of its divisors is an integer number (170667648).

Almost surely, 2^1361561141 is an apocalyptic number.

It is an amenable number.

1361561141 is a deficient number, since it is larger than the sum of its proper divisors (3780043).

1361561141 is a wasteful number, since it uses less digits than its factorization.

1361561141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411.

The product of its digits is 2160, while the sum is 29.

The square root of 1361561141 is about 36899.3379479903. The cubic root of 1361561141 is about 1108.3554200107.

The spelling of 1361561141 in words is "one billion, three hundred sixty-one million, five hundred sixty-one thousand, one hundred forty-one".