7291866401 has 16 divisors (see below), whose sum is σ = 7596288000. Its totient is φ = 6991118400.

The previous prime is 7291866391. The next prime is 7291866403. The reversal of 7291866401 is 1046681927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7291866401 is a prime.

It is a super-2 number, since 2×7291866401² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7291866403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5211500 + ... + 5212898.

It is an arithmetic number, because the mean of its divisors is an integer number (474768000).

Almost surely, 2^7291866401 is an apocalyptic number.

It is an amenable number.

7291866401 is a deficient number, since it is larger than the sum of its proper divisors (304421599).

7291866401 is a wasteful number, since it uses less digits than its factorization.

7291866401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 7291866401 is about 85392.4258994906. The cubic root of 7291866401 is about 1939.1566817674.

The spelling of 7291866401 in words is "seven billion, two hundred ninety-one million, eight hundred sixty-six thousand, four hundred one".