2173812763 has 4 divisors (see below), whose sum is σ = 2301684120. Its totient is φ = 2045941408.

The previous prime is 2173812733. The next prime is 2173812779. The reversal of 2173812763 is 3672183712.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2173812763 - 2¹³ = 2173804571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2173812733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63935653 + ... + 63935686.

It is an arithmetic number, because the mean of its divisors is an integer number (575421030).

Almost surely, 2^2173812763 is an apocalyptic number.

2173812763 is a deficient number, since it is larger than the sum of its proper divisors (127871357).

2173812763 is a wasteful number, since it uses less digits than its factorization.

2173812763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127871356.

The product of its digits is 84672, while the sum is 40.

The square root of 2173812763 is about 46624.1650112900. The cubic root of 2173812763 is about 1295.4103961082.

The spelling of 2173812763 in words is "two billion, one hundred seventy-three million, eight hundred twelve thousand, seven hundred sixty-three".