1161606072 has 32 divisors (see below), whose sum is σ = 3168017280. Its totient is φ = 352001760.

The previous prime is 1161606023. The next prime is 1161606077. The reversal of 1161606072 is 2706061611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161606077) 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, 2199748 + ... + 2200275.

It is an arithmetic number, because the mean of its divisors is an integer number (99000540).

Almost surely, 2^1161606072 is an apocalyptic number.

1161606072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1161606072 is an abundant number, since it is smaller than the sum of its proper divisors (2006411208).

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

1161606072 is a wasteful number, since it uses less digits than its factorization.

1161606072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4400043 (or 4400039 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1161606072 is about 34082.3425251258. The cubic root of 1161606072 is about 1051.2022727329.

Adding to 1161606072 its reverse (2706061611), we get a palindrome (3867667683).

The spelling of 1161606072 in words is "one billion, one hundred sixty-one million, six hundred six thousand, seventy-two".