2138666363 has 8 divisors (see below), whose sum is σ = 2166017328. Its totient is φ = 2111463424.

The previous prime is 2138666297. The next prime is 2138666381. The reversal of 2138666363 is 3636668312.

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 2138666363 - 2¹⁰ = 2138665339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138665363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7781 + ... + 65862.

It is an arithmetic number, because the mean of its divisors is an integer number (270752166).

Almost surely, 2^2138666363 is an apocalyptic number.

2138666363 is a deficient number, since it is larger than the sum of its proper divisors (27350965).

2138666363 is a wasteful number, since it uses less digits than its factorization.

2138666363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74013.

The product of its digits is 559872, while the sum is 44.

The square root of 2138666363 is about 46245.7172395455. The cubic root of 2138666363 is about 1288.3909917460.

The spelling of 2138666363 in words is "two billion, one hundred thirty-eight million, six hundred sixty-six thousand, three hundred sixty-three".