1166251641 has 16 divisors (see below), whose sum is σ = 1576569600. Its totient is φ = 766741248.

The previous prime is 1166251607. The next prime is 1166251657. The reversal of 1166251641 is 1461526611.

It is not a de Polignac number, because 1166251641 - 2¹¹ = 1166249593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166258641) 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, 236695 + ... + 241571.

It is an arithmetic number, because the mean of its divisors is an integer number (98535600).

Almost surely, 2^1166251641 is an apocalyptic number.

It is an amenable number.

1166251641 is a deficient number, since it is larger than the sum of its proper divisors (410317959).

1166251641 is a wasteful number, since it uses less digits than its factorization.

1166251641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5968.

The product of its digits is 8640, while the sum is 33.

The square root of 1166251641 is about 34150.4266591210. The cubic root of 1166251641 is about 1052.6017537874.

The spelling of 1166251641 in words is "one billion, one hundred sixty-six million, two hundred fifty-one thousand, six hundred forty-one".