1161551366 has 8 divisors (see below), whose sum is σ = 1753016664. Its totient is φ = 577212480.

The previous prime is 1161551353. The next prime is 1161551387. The reversal of 1161551366 is 6631551611.

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

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, 1781195 + ... + 1781846.

It is an arithmetic number, because the mean of its divisors is an integer number (219127083).

Almost surely, 2^1161551366 is an apocalyptic number.

1161551366 is a deficient number, since it is larger than the sum of its proper divisors (591465298).

1161551366 is a wasteful number, since it uses less digits than its factorization.

1161551366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3563206.

The product of its digits is 16200, while the sum is 35.

The square root of 1161551366 is about 34081.5399593387. The cubic root of 1161551366 is about 1051.1857703013.

The spelling of 1161551366 in words is "one billion, one hundred sixty-one million, five hundred fifty-one thousand, three hundred sixty-six".