1161610234 has 4 divisors (see below), whose sum is σ = 1742415354. Its totient is φ = 580805116.

The previous prime is 1161610189. The next prime is 1161610249. The reversal of 1161610234 is 4320161611.

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

It can be written as a sum of positive squares in only one way, i.e., 666414225 + 495196009 = 25815^2 + 22253^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1161610199 and 1161610208.

It is an unprimeable number.

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, 290402557 + ... + 290402560.

Almost surely, 2^1161610234 is an apocalyptic number.

1161610234 is a deficient number, since it is larger than the sum of its proper divisors (580805120).

1161610234 is an equidigital number, since it uses as much as digits as its factorization.

1161610234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580805119.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1161610234 is about 34082.4035830808. The cubic root of 1161610234 is about 1051.2035282069.

Adding to 1161610234 its reverse (4320161611), we get a palindrome (5481771845).

The spelling of 1161610234 in words is "one billion, one hundred sixty-one million, six hundred ten thousand, two hundred thirty-four".