1240166845 has 8 divisors (see below), whose sum is σ = 1493460576. Its totient is φ = 988626576.

The previous prime is 1240166801. The next prime is 1240166857. The reversal of 1240166845 is 5486610421.

1240166845 is nontrivially palindromic in base 11.

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

It is a cyclic number.

It is not a de Polignac number, because 1240166845 - 2¹⁹ = 1239642557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436807 + ... + 439636.

It is an arithmetic number, because the mean of its divisors is an integer number (186682572).

Almost surely, 2^1240166845 is an apocalyptic number.

It is an amenable number.

1240166845 is a deficient number, since it is larger than the sum of its proper divisors (253293731).

1240166845 is an equidigital number, since it uses as much as digits as its factorization.

1240166845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 876731.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1240166845 is about 35216.0026834392. The cubic root of 1240166845 is about 1074.3852537120.

The spelling of 1240166845 in words is "one billion, two hundred forty million, one hundred sixty-six thousand, eight hundred forty-five".