1161582454 has 4 divisors (see below), whose sum is σ = 1742373684. Its totient is φ = 580791226.

The previous prime is 1161582451. The next prime is 1161582463. The reversal of 1161582454 is 4542851611.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161582451) by changing a digit.

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 as a sum of consecutive naturals, namely, 290395612 + ... + 290395615.

It is an arithmetic number, because the mean of its divisors is an integer number (435593421).

Almost surely, 2^1161582454 is an apocalyptic number.

1161582454 is a deficient number, since it is larger than the sum of its proper divisors (580791230).

1161582454 is an equidigital number, since it uses as much as digits as its factorization.

1161582454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580791229.

The product of its digits is 38400, while the sum is 37.

The square root of 1161582454 is about 34081.9960389646. The cubic root of 1161582454 is about 1051.1951482684.

The spelling of 1161582454 in words is "one billion, one hundred sixty-one million, five hundred eighty-two thousand, four hundred fifty-four".