1172167215 has 16 divisors (see below), whose sum is σ = 1926156768. Its totient is φ = 608259456.

The previous prime is 1172167121. The next prime is 1172167223. The reversal of 1172167215 is 5127612711.

It is not a de Polignac number, because 1172167215 - 2⁸ = 1172166959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1055452 + ... + 1056561.

It is an arithmetic number, because the mean of its divisors is an integer number (120384798).

Almost surely, 2^1172167215 is an apocalyptic number.

1172167215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1172167215 is a deficient number, since it is larger than the sum of its proper divisors (753989553).

1172167215 is a wasteful number, since it uses less digits than its factorization.

1172167215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112058.

The product of its digits is 5880, while the sum is 33.

The square root of 1172167215 is about 34236.9276512949. The cubic root of 1172167215 is about 1054.3784558737.

Adding to 1172167215 its reverse (5127612711), we get a palindrome (6299779926).

The spelling of 1172167215 in words is "one billion, one hundred seventy-two million, one hundred sixty-seven thousand, two hundred fifteen".