1161667766 has 16 divisors (see below), whose sum is σ = 2108573856. Its totient is φ = 468571776.

The previous prime is 1161667757. The next prime is 1161667777. The reversal of 1161667766 is 6677661611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161667766.

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, 2440241 + ... + 2440716.

It is an arithmetic number, because the mean of its divisors is an integer number (131785866).

Almost surely, 2^1161667766 is an apocalyptic number.

1161667766 is a deficient number, since it is larger than the sum of its proper divisors (946906090).

1161667766 is a wasteful number, since it uses less digits than its factorization.

1161667766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880983.

The product of its digits is 381024, while the sum is 47.

The square root of 1161667766 is about 34083.2475858742. The cubic root of 1161667766 is about 1051.2208825199.

The spelling of 1161667766 in words is "one billion, one hundred sixty-one million, six hundred sixty-seven thousand, seven hundred sixty-six".