1361161807 has 4 divisors (see below), whose sum is σ = 1373649640. Its totient is φ = 1348673976.

The previous prime is 1361161799. The next prime is 1361161871. The reversal of 1361161807 is 7081611631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7081611631 = 8461 ⋅836971.

It is a cyclic number.

It is not a de Polignac number, because 1361161807 - 2³ = 1361161799 is a prime.

It is a super-2 number, since 2×1361161807² = 3705522929671010498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361191807) 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, 6243753 + ... + 6243970.

It is an arithmetic number, because the mean of its divisors is an integer number (343412410).

Almost surely, 2^1361161807 is an apocalyptic number.

1361161807 is a deficient number, since it is larger than the sum of its proper divisors (12487833).

1361161807 is a wasteful number, since it uses less digits than its factorization.

1361161807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12487832.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 1361161807 is about 36893.9264242775. The cubic root of 1361161807 is about 1108.2470524250.

The spelling of 1361161807 in words is "one billion, three hundred sixty-one million, one hundred sixty-one thousand, eight hundred seven".