1166621530 has 16 divisors (see below), whose sum is σ = 2100443904. Its totient is φ = 466531920.

The previous prime is 1166621513. The next prime is 1166621537. The reversal of 1166621530 is 351266611.

It is a super-3 number, since 3×1166621530³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1166621492 and 1166621501.

It is not an unprimeable number, because it can be changed into a prime (1166621537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35635 + ... + 60025.

It is an arithmetic number, because the mean of its divisors is an integer number (131277744).

Almost surely, 2^1166621530 is an apocalyptic number.

1166621530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1166621530 is a deficient number, since it is larger than the sum of its proper divisors (933822374).

1166621530 is a wasteful number, since it uses less digits than its factorization.

1166621530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29181.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1166621530 is about 34155.8418136634. The cubic root of 1166621530 is about 1052.7130232716.

The spelling of 1166621530 in words is "one billion, one hundred sixty-six million, six hundred twenty-one thousand, five hundred thirty".