1161686455 has 4 divisors (see below), whose sum is σ = 1394023752. Its totient is φ = 929349160.

The previous prime is 1161686419. The next prime is 1161686479. The reversal of 1161686455 is 5546861611.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1161686455 - 2¹⁵ = 1161653687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116168641 + ... + 116168650.

It is an arithmetic number, because the mean of its divisors is an integer number (348505938).

Almost surely, 2^1161686455 is an apocalyptic number.

1161686455 is a deficient number, since it is larger than the sum of its proper divisors (232337297).

1161686455 is an equidigital number, since it uses as much as digits as its factorization.

1161686455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232337296.

The product of its digits is 172800, while the sum is 43.

The square root of 1161686455 is about 34083.5217517204. The cubic root of 1161686455 is about 1051.2265198637.

The spelling of 1161686455 in words is "one billion, one hundred sixty-one million, six hundred eighty-six thousand, four hundred fifty-five".