1161018372 has 12 divisors (see below), whose sum is σ = 2709042896. Its totient is φ = 387006120.

The previous prime is 1161018329. The next prime is 1161018377. The reversal of 1161018372 is 2738101611.

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 (1161018377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48375754 + ... + 48375777.

Almost surely, 2^1161018372 is an apocalyptic number.

1161018372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161018372 is an abundant number, since it is smaller than the sum of its proper divisors (1548024524).

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

1161018372 is a wasteful number, since it uses less digits than its factorization.

1161018372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96751538 (or 96751536 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1161018372 is about 34073.7196678026. The cubic root of 1161018372 is about 1051.0249619653.

Adding to 1161018372 its reverse (2738101611), we get a palindrome (3899119983).

The spelling of 1161018372 in words is "one billion, one hundred sixty-one million, eighteen thousand, three hundred seventy-two".