2118752401 has 4 divisors (see below), whose sum is σ = 2125521892. Its totient is φ = 2111982912.

The previous prime is 2118752399. The next prime is 2118752413. The reversal of 2118752401 is 1042578112.

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 566392401 + 1552360000 = 23799^2 + 39400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118752401 - 2¹ = 2118752399 is a prime.

It is a super-2 number, since 2×2118752401² = 8978223473486529602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2118756401) 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, 3384276 + ... + 3384901.

It is an arithmetic number, because the mean of its divisors is an integer number (531380473).

Almost surely, 2^2118752401 is an apocalyptic number.

It is an amenable number.

2118752401 is a deficient number, since it is larger than the sum of its proper divisors (6769491).

2118752401 is an equidigital number, since it uses as much as digits as its factorization.

2118752401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6769490.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 2118752401 is about 46029.9076796815. The cubic root of 2118752401 is about 1284.3796105951.

The spelling of 2118752401 in words is "two billion, one hundred eighteen million, seven hundred fifty-two thousand, four hundred one".