1173850081 has 4 divisors (see below), whose sum is σ = 1214327700. Its totient is φ = 1133372464.

The previous prime is 1173850079. The next prime is 1173850087. The reversal of 1173850081 is 1800583711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 317409856 + 856440225 = 17816^2 + 29265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1173850081 - 2¹ = 1173850079 is a prime.

It is a super-2 number, since 2×1173850081² = 2755848025327413122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1173850087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20238766 + ... + 20238823.

It is an arithmetic number, because the mean of its divisors is an integer number (303581925).

Almost surely, 2^1173850081 is an apocalyptic number.

It is an amenable number.

1173850081 is a deficient number, since it is larger than the sum of its proper divisors (40477619).

1173850081 is an equidigital number, since it uses as much as digits as its factorization.

1173850081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40477618.

The product of its (nonzero) digits is 6720, while the sum is 34.

The square root of 1173850081 is about 34261.4956036656. The cubic root of 1173850081 is about 1054.8828006344.

The spelling of 1173850081 in words is "one billion, one hundred seventy-three million, eight hundred fifty thousand, eighty-one".