3782021273 has 4 divisors (see below), whose sum is σ = 3829895040. Its totient is φ = 3734147508.

The previous prime is 3782021249. The next prime is 3782021381. The reversal of 3782021273 is 3721202873.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3782021273 - 2⁶ = 3782021209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3782021233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23936765 + ... + 23936922.

It is an arithmetic number, because the mean of its divisors is an integer number (957473760).

Almost surely, 2^3782021273 is an apocalyptic number.

It is an amenable number.

3782021273 is a deficient number, since it is larger than the sum of its proper divisors (47873767).

3782021273 is an equidigital number, since it uses as much as digits as its factorization.

3782021273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47873766.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 3782021273 is about 61498.1404027797. The cubic root of 3782021273 is about 1558.0258384376.

The spelling of 3782021273 in words is "three billion, seven hundred eighty-two million, twenty-one thousand, two hundred seventy-three".