7368000781 has 4 divisors (see below), whose sum is σ = 7379495964. Its totient is φ = 7356505600.

The previous prime is 7368000779. The next prime is 7368000841. The reversal of 7368000781 is 1870008637.

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 6850210756 + 517790025 = 82766^2 + 22755^2 .

It is a cyclic number.

It is not a de Polignac number, because 7368000781 - 2¹ = 7368000779 is a prime.

It is a super-2 number, since 2×7368000781² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7368000581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5746630 + ... + 5747911.

It is an arithmetic number, because the mean of its divisors is an integer number (1844873991).

Almost surely, 2^7368000781 is an apocalyptic number.

7368000781 is the 38388-th centered decagonal number.

It is an amenable number.

7368000781 is a deficient number, since it is larger than the sum of its proper divisors (11495183).

7368000781 is a wasteful number, since it uses less digits than its factorization.

7368000781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495182.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 7368000781 is about 85837.0594848169. The cubic root of 7368000781 is about 1945.8822405043.

The spelling of 7368000781 in words is "seven billion, three hundred sixty-eight million, seven hundred eighty-one", and thus it is an aban number.