1361161806 has 16 divisors (see below), whose sum is σ = 2816197200. Its totient is φ = 438075008.

The previous prime is 1361161799. The next prime is 1361161871. The reversal of 1361161806 is 6081611631.

It is a super-2 number, since 2×1361161806² = 3705522924226363272, which contains 22 as substring.

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, 3911211 + ... + 3911558.

It is an arithmetic number, because the mean of its divisors is an integer number (176012325).

Almost surely, 2^1361161806 is an apocalyptic number.

1361161806 is an abundant number, since it is smaller than the sum of its proper divisors (1455035394).

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

1361161806 is a wasteful number, since it uses less digits than its factorization.

1361161806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7822803.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1361161806 is about 36893.9264107251. The cubic root of 1361161806 is about 1108.2470521536.

The spelling of 1361161806 in words is "one billion, three hundred sixty-one million, one hundred sixty-one thousand, eight hundred six".