1172166215 has 8 divisors (see below), whose sum is σ = 1534472208. Its totient is φ = 852484480.

The previous prime is 1172166211. The next prime is 1172166251. The reversal of 1172166215 is 5126612711.

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

It is not a de Polignac number, because 1172166215 - 2² = 1172166211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172166211) 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, 10656002 + ... + 10656111.

It is an arithmetic number, because the mean of its divisors is an integer number (191809026).

Almost surely, 2^1172166215 is an apocalyptic number.

1172166215 is a deficient number, since it is larger than the sum of its proper divisors (362305993).

1172166215 is a wasteful number, since it uses less digits than its factorization.

1172166215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21312129.

The product of its digits is 5040, while the sum is 32.

The square root of 1172166215 is about 34236.9130471776. The cubic root of 1172166215 is about 1054.3781560363.

Adding to 1172166215 its reverse (5126612711), we get a palindrome (6298778926).

The spelling of 1172166215 in words is "one billion, one hundred seventy-two million, one hundred sixty-six thousand, two hundred fifteen".