1166211715 has 8 divisors (see below), whose sum is σ = 1420341840. Its totient is φ = 919044192.

The previous prime is 1166211703. The next prime is 1166211721. The reversal of 1166211715 is 5171126611.

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 1166211715 - 2¹⁵ = 1166178947 is a prime.

It is a super-4 number, since 4×1166211715⁴ (a number of 37 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1740280 + ... + 1740949.

It is an arithmetic number, because the mean of its divisors is an integer number (177542730).

Almost surely, 2^1166211715 is an apocalyptic number.

1166211715 is a deficient number, since it is larger than the sum of its proper divisors (254130125).

1166211715 is an equidigital number, since it uses as much as digits as its factorization.

1166211715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481301.

The product of its digits is 2520, while the sum is 31.

The square root of 1166211715 is about 34149.8420933392. The cubic root of 1166211715 is about 1052.5897418979.

It can be divided in two parts, 116621 and 1715, that added together give a square (118336 = 344²).

The spelling of 1166211715 in words is "one billion, one hundred sixty-six million, two hundred eleven thousand, seven hundred fifteen".