1161743621 has 8 divisors (see below), whose sum is σ = 1178119320. Its totient is φ = 1145475072.

The previous prime is 1161743617. The next prime is 1161743629. The reversal of 1161743621 is 1263471611.

It can be written as a sum of positive squares in 4 ways, for example, as 112890625 + 1048852996 = 10625^2 + 32386^2 .

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

It is not a de Polignac number, because 1161743621 - 2² = 1161743617 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161743629) 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, 4826 + ... + 48443.

It is an arithmetic number, because the mean of its divisors is an integer number (147264915).

Almost surely, 2^1161743621 is an apocalyptic number.

It is an amenable number.

1161743621 is a deficient number, since it is larger than the sum of its proper divisors (16375699).

1161743621 is a wasteful number, since it uses less digits than its factorization.

1161743621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53575.

The product of its digits is 6048, while the sum is 32.

The square root of 1161743621 is about 34084.3603577946. The cubic root of 1161743621 is about 1051.2437630218.

The spelling of 1161743621 in words is "one billion, one hundred sixty-one million, seven hundred forty-three thousand, six hundred twenty-one".