1151123172 has 12 divisors (see below), whose sum is σ = 2685954096. Its totient is φ = 383707720.

The previous prime is 1151123161. The next prime is 1151123179. The reversal of 1151123172 is 2713211511.

1151123172 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (1151123179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47963454 + ... + 47963477.

It is an arithmetic number, because the mean of its divisors is an integer number (223829508).

Almost surely, 2^1151123172 is an apocalyptic number.

1151123172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1151123172 is an abundant number, since it is smaller than the sum of its proper divisors (1534830924).

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

1151123172 is a wasteful number, since it uses less digits than its factorization.

1151123172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95926938 (or 95926936 counting only the distinct ones).

The product of its digits is 420, while the sum is 24.

The square root of 1151123172 is about 33928.2061417930. The cubic root of 1151123172 is about 1048.0305249641.

Adding to 1151123172 its reverse (2713211511), we get a palindrome (3864334683).

The spelling of 1151123172 in words is "one billion, one hundred fifty-one million, one hundred twenty-three thousand, one hundred seventy-two".