1161837944 has 8 divisors (see below), whose sum is σ = 2178446160. Its totient is φ = 580918968.

The previous prime is 1161837923. The next prime is 1161837949. The reversal of 1161837944 is 4497381611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1161837895 and 1161837904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161837949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72614864 + ... + 72614879.

It is an arithmetic number, because the mean of its divisors is an integer number (272305770).

Almost surely, 2^1161837944 is an apocalyptic number.

It is an amenable number.

1161837944 is a deficient number, since it is larger than the sum of its proper divisors (1016608216).

1161837944 is a wasteful number, since it uses less digits than its factorization.

1161837944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145229749 (or 145229745 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 1161837944 is about 34085.7439995081. The cubic root of 1161837944 is about 1051.2722127246.

The spelling of 1161837944 in words is "one billion, one hundred sixty-one million, eight hundred thirty-seven thousand, nine hundred forty-four".