1156081472 has 56 divisors (see below), whose sum is σ = 2823520896. Its totient is φ = 457348608.

The previous prime is 1156081457. The next prime is 1156081517. The reversal of 1156081472 is 2741806511.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93428 + ... + 105075.

It is an arithmetic number, because the mean of its divisors is an integer number (50420016).

Almost surely, 2^1156081472 is an apocalyptic number.

It is an amenable number.

1156081472 is an abundant number, since it is smaller than the sum of its proper divisors (1667439424).

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

1156081472 is a wasteful number, since it uses less digits than its factorization.

1156081472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198535 (or 198525 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1156081472 is about 34001.1980965377. The cubic root of 1156081472 is about 1049.5331172990.

Adding to 1156081472 its reverse (2741806511), we get a palindrome (3897887983).

The spelling of 1156081472 in words is "one billion, one hundred fifty-six million, eighty-one thousand, four hundred seventy-two".