1161545258 has 8 divisors (see below), whose sum is σ = 1749608640. Its totient is φ = 578342380.

The previous prime is 1161545227. The next prime is 1161545269. The reversal of 1161545258 is 8525451611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1214528 + ... + 1215483.

It is an arithmetic number, because the mean of its divisors is an integer number (218701080).

Almost surely, 2^1161545258 is an apocalyptic number.

1161545258 is a deficient number, since it is larger than the sum of its proper divisors (588063382).

1161545258 is a wasteful number, since it uses less digits than its factorization.

1161545258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430252.

The product of its digits is 48000, while the sum is 38.

The square root of 1161545258 is about 34081.4503505939. The cubic root of 1161545258 is about 1051.1839277500.

Adding to 1161545258 its reverse (8525451611), we get a palindrome (9686996869).

The spelling of 1161545258 in words is "one billion, one hundred sixty-one million, five hundred forty-five thousand, two hundred fifty-eight".