1131081766 has 8 divisors (see below), whose sum is σ = 1698013584. Its totient is φ = 565077240.

The previous prime is 1131081709. The next prime is 1131081769. The reversal of 1131081766 is 6671801311.

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

It is a super-2 number, since 2×1131081766² = 2558691922755357512, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131081769) 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, 228765 + ... + 233656.

It is an arithmetic number, because the mean of its divisors is an integer number (212251698).

Almost surely, 2^1131081766 is an apocalyptic number.

1131081766 is a deficient number, since it is larger than the sum of its proper divisors (566931818).

1131081766 is a wasteful number, since it uses less digits than its factorization.

1131081766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463646.

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

The square root of 1131081766 is about 33631.5590777472. The cubic root of 1131081766 is about 1041.9127048417.

The spelling of 1131081766 in words is "one billion, one hundred thirty-one million, eighty-one thousand, seven hundred sixty-six".