2665011938 has 4 divisors (see below), whose sum is σ = 3997517910. Its totient is φ = 1332505968.

The previous prime is 2665011929. The next prime is 2665011961. The reversal of 2665011938 is 8391105662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8391105662 = 2 ⋅4195552831.

It can be written as a sum of positive squares in only one way, i.e., 1390022089 + 1274989849 = 37283^2 + 35707^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2665011895 and 2665011904.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666252983 + ... + 666252986.

Almost surely, 2^2665011938 is an apocalyptic number.

2665011938 is a deficient number, since it is larger than the sum of its proper divisors (1332505972).

2665011938 is a wasteful number, since it uses less digits than its factorization.

2665011938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332505971.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 2665011938 is about 51623.7536217583. The cubic root of 2665011938 is about 1386.4356581581.

The spelling of 2665011938 in words is "two billion, six hundred sixty-five million, eleven thousand, nine hundred thirty-eight".