1131666650 has 24 divisors (see below), whose sum is σ = 2107647840. Its totient is φ = 452075760.

The previous prime is 1131666643. The next prime is 1131666661. The reversal of 1131666650 is 566661311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131666650.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24971 + ... + 53729.

It is an arithmetic number, because the mean of its divisors is an integer number (87818660).

Almost surely, 2^1131666650 is an apocalyptic number.

1131666650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131666650 is a deficient number, since it is larger than the sum of its proper divisors (975981190).

1131666650 is a wasteful number, since it uses less digits than its factorization.

1131666650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29558 (or 29553 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1131666650 is about 33640.2534175948. The cubic root of 1131666650 is about 1042.0922654118.

The spelling of 1131666650 in words is "one billion, one hundred thirty-one million, six hundred sixty-six thousand, six hundred fifty".