1166632401 has 8 divisors (see below), whose sum is σ = 1696919904. Its totient is φ = 707049920.

The previous prime is 1166632399. The next prime is 1166632451. The reversal of 1166632401 is 1042366611.

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

It is a cyclic number.

It is not a de Polignac number, because 1166632401 - 2¹ = 1166632399 is a prime.

It is a super-2 number, since 2×1166632401² = 2722062318126049602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166632451) 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, 17676216 + ... + 17676281.

It is an arithmetic number, because the mean of its divisors is an integer number (212114988).

Almost surely, 2^1166632401 is an apocalyptic number.

1166632401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1166632401 is a deficient number, since it is larger than the sum of its proper divisors (530287503).

1166632401 is a wasteful number, since it uses less digits than its factorization.

1166632401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35352511.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 1166632401 is about 34156.0009515166. Note that the first 3 decimals coincide. The cubic root of 1166632401 is about 1052.7162931146.

The spelling of 1166632401 in words is "one billion, one hundred sixty-six million, six hundred thirty-two thousand, four hundred one".