2138265767 has 8 divisors (see below), whose sum is σ = 2341078032. Its totient is φ = 1936857600.

The previous prime is 2138265733. The next prime is 2138265781. The reversal of 2138265767 is 7675628312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138265767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138265707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347834 + ... + 353927.

It is an arithmetic number, because the mean of its divisors is an integer number (292634754).

Almost surely, 2^2138265767 is an apocalyptic number.

2138265767 is a deficient number, since it is larger than the sum of its proper divisors (202812265).

2138265767 is a wasteful number, since it uses less digits than its factorization.

2138265767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702049.

The product of its digits is 846720, while the sum is 47.

The square root of 2138265767 is about 46241.3858680728. The cubic root of 2138265767 is about 1288.3105434012.

The spelling of 2138265767 in words is "two billion, one hundred thirty-eight million, two hundred sixty-five thousand, seven hundred sixty-seven".