3438321778 has 8 divisors (see below), whose sum is σ = 5176102572. Its totient is φ = 1712954256.

The previous prime is 3438321769. The next prime is 3438321847. The reversal of 3438321778 is 8771238343.

It can be written as a sum of positive squares in 2 ways, for example, as 3338181729 + 100140049 = 57777^2 + 10007^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3102625 + ... + 3103732.

Almost surely, 2^3438321778 is an apocalyptic number.

3438321778 is a deficient number, since it is larger than the sum of its proper divisors (1737780794).

3438321778 is a wasteful number, since it uses less digits than its factorization.

3438321778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6206636.

The product of its digits is 677376, while the sum is 46.

The square root of 3438321778 is about 58637.2047253278. The cubic root of 3438321778 is about 1509.3229393020.

The spelling of 3438321778 in words is "three billion, four hundred thirty-eight million, three hundred twenty-one thousand, seven hundred seventy-eight".