1161111130 has 8 divisors (see below), whose sum is σ = 2090000052. Its totient is φ = 464444448.

The previous prime is 1161111113. The next prime is 1161111131. The reversal of 1161111130 is 311111611.

It can be written as a sum of positive squares in 2 ways, for example, as 1039869009 + 121242121 = 32247^2 + 11011^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1161111131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58055547 + ... + 58055566.

Almost surely, 2^1161111130 is an apocalyptic number.

1161111130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161111130 is a deficient number, since it is larger than the sum of its proper divisors (928888922).

1161111130 is a wasteful number, since it uses less digits than its factorization.

1161111130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116111120.

The product of its (nonzero) digits is 18, while the sum is 16.

The square root of 1161111130 is about 34075.0807776005. The cubic root of 1161111130 is about 1051.0529512947.

Adding to 1161111130 its reverse (311111611), we get a palindrome (1472222741).

The spelling of 1161111130 in words is "one billion, one hundred sixty-one million, one hundred eleven thousand, one hundred thirty".