1161445130 has 16 divisors (see below), whose sum is σ = 2141592264. Its totient is φ = 453246720.

The previous prime is 1161445081. The next prime is 1161445139. The reversal of 1161445130 is 315441611.

It can be written as a sum of positive squares in 4 ways, for example, as 312829969 + 848615161 = 17687^2 + 29131^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1161445130.

It is not an unprimeable number, because it can be changed into a prime (1161445139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1415987 + ... + 1416806.

Almost surely, 2^1161445130 is an apocalyptic number.

1161445130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1161445130 is a deficient number, since it is larger than the sum of its proper divisors (980147134).

1161445130 is a wasteful number, since it uses less digits than its factorization.

1161445130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832841.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1161445130 is about 34079.9813673658. The cubic root of 1161445130 is about 1051.1537220195.

Adding to 1161445130 its reverse (315441611), we get a palindrome (1476886741).

The spelling of 1161445130 in words is "one billion, one hundred sixty-one million, four hundred forty-five thousand, one hundred thirty".