3784780855 has 8 divisors (see below), whose sum is σ = 4688244864. Its totient is φ = 2930152800.

The previous prime is 3784780843. The next prime is 3784780859. The reversal of 3784780855 is 5580874873.

It is a happy number.

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

It is not a de Polignac number, because 3784780855 - 2¹⁷ = 3784649783 is a prime.

It is a super-2 number, since 2×3784780855² = 28649132240749062050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3784780796 and 3784780805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3784780859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12208816 + ... + 12209125.

It is an arithmetic number, because the mean of its divisors is an integer number (586030608).

Almost surely, 2^3784780855 is an apocalyptic number.

3784780855 is a deficient number, since it is larger than the sum of its proper divisors (903464009).

3784780855 is a wasteful number, since it uses less digits than its factorization.

3784780855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24417977.

The product of its (nonzero) digits is 7526400, while the sum is 55.

The square root of 3784780855 is about 61520.5726159957. The cubic root of 3784780855 is about 1558.4046883039.

The spelling of 3784780855 in words is "three billion, seven hundred eighty-four million, seven hundred eighty thousand, eight hundred fifty-five".