3780275639 has 4 divisors (see below), whose sum is σ = 4320315024. Its totient is φ = 3240236256.

The previous prime is 3780275633. The next prime is 3780275693. The reversal of 3780275639 is 9365720873.

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 3780275639 - 2²⁸ = 3511840183 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 (3780275633) 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, 270019682 + ... + 270019695.

It is an arithmetic number, because the mean of its divisors is an integer number (1080078756).

Almost surely, 2^3780275639 is an apocalyptic number.

3780275639 is a deficient number, since it is larger than the sum of its proper divisors (540039385).

3780275639 is an equidigital number, since it uses as much as digits as its factorization.

3780275639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540039384.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The square root of 3780275639 is about 61483.9461892289. The cubic root of 3780275639 is about 1557.7860934943.

The spelling of 3780275639 in words is "three billion, seven hundred eighty million, two hundred seventy-five thousand, six hundred thirty-nine".