1161764144 has 10 divisors (see below), whose sum is σ = 2250918060. Its totient is φ = 580882064.

The previous prime is 1161764141. The next prime is 1161764159. The reversal of 1161764144 is 4414671611.

It is not an unprimeable number, because it can be changed into a prime (1161764141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36305114 + ... + 36305145.

It is an arithmetic number, because the mean of its divisors is an integer number (225091806).

Almost surely, 2^1161764144 is an apocalyptic number.

It is an amenable number.

1161764144 is a deficient number, since it is larger than the sum of its proper divisors (1089153916).

1161764144 is an equidigital number, since it uses as much as digits as its factorization.

1161764144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72610267 (or 72610261 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1161764144 is about 34084.6614182978. The cubic root of 1161764144 is about 1051.2499533000.

The spelling of 1161764144 in words is "one billion, one hundred sixty-one million, seven hundred sixty-four thousand, one hundred forty-four".