1180154172 has 12 divisors (see below), whose sum is σ = 2753693096. Its totient is φ = 393384720.

The previous prime is 1180154149. The next prime is 1180154191. The reversal of 1180154172 is 2714510811.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49173079 + ... + 49173102.

Almost surely, 2^1180154172 is an apocalyptic number.

1180154172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1180154172 is an abundant number, since it is smaller than the sum of its proper divisors (1573538924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1180154172 is a wasteful number, since it uses less digits than its factorization.

1180154172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98346188 (or 98346186 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 1180154172 is about 34353.3720615604. The cubic root of 1180154172 is about 1056.7678249817.

Adding to 1180154172 its reverse (2714510811), we get a palindrome (3894664983).

The spelling of 1180154172 in words is "one billion, one hundred eighty million, one hundred fifty-four thousand, one hundred seventy-two".