1166620450 has 24 divisors (see below), whose sum is σ = 2173820688. Its totient is φ = 465808080.

The previous prime is 1166620447. The next prime is 1166620457. The reversal of 1166620450 is 540266611.

It is a super-2 number, since 2×1166620450² = 2722006548716405000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166620457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7429 + ... + 48871.

It is an arithmetic number, because the mean of its divisors is an integer number (90575862).

Almost surely, 2^1166620450 is an apocalyptic number.

1166620450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166620450 is a deficient number, since it is larger than the sum of its proper divisors (1007200238).

1166620450 is a wasteful number, since it uses less digits than its factorization.

1166620450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42018 (or 42013 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1166620450 is about 34155.8260037728. The cubic root of 1166620450 is about 1052.7126984217.

The spelling of 1166620450 in words is "one billion, one hundred sixty-six million, six hundred twenty thousand, four hundred fifty".