1161744445 has 8 divisors (see below), whose sum is σ = 1394842680. Its totient is φ = 928896000.

The previous prime is 1161744431. The next prime is 1161744461. The reversal of 1161744445 is 5444471611.

It can be written as a sum of positive squares in 4 ways, for example, as 31843449 + 1129900996 = 5643^2 + 33614^2 .

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

It is not a de Polignac number, because 1161744445 - 2²⁵ = 1128190013 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52056 + ... + 70945.

It is an arithmetic number, because the mean of its divisors is an integer number (174355335).

Almost surely, 2^1161744445 is an apocalyptic number.

It is an amenable number.

1161744445 is a deficient number, since it is larger than the sum of its proper divisors (233098235).

1161744445 is a wasteful number, since it uses less digits than its factorization.

1161744445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124895.

The product of its digits is 53760, while the sum is 37.

The square root of 1161744445 is about 34084.3724454478. The cubic root of 1161744445 is about 1051.2440115634.

The spelling of 1161744445 in words is "one billion, one hundred sixty-one million, seven hundred forty-four thousand, four hundred forty-five".