1166621937 has 16 divisors (see below), whose sum is σ = 1681084608. Its totient is φ = 715377600.

The previous prime is 1166621917. The next prime is 1166621959. The reversal of 1166621937 is 7391266611.

It is not a de Polignac number, because 1166621937 - 2¹⁶ = 1166556401 is a prime.

It is a super-2 number, since 2×1166621937² = 2722013487779263938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166621917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41814 + ... + 63887.

It is an arithmetic number, because the mean of its divisors is an integer number (105067788).

Almost surely, 2^1166621937 is an apocalyptic number.

It is an amenable number.

1166621937 is a deficient number, since it is larger than the sum of its proper divisors (514462671).

1166621937 is a wasteful number, since it uses less digits than its factorization.

1166621937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106000.

The product of its digits is 81648, while the sum is 42.

The square root of 1166621937 is about 34155.8477716481. The cubic root of 1166621937 is about 1052.7131456918.

The spelling of 1166621937 in words is "one billion, one hundred sixty-six million, six hundred twenty-one thousand, nine hundred thirty-seven".