3454213778 has 4 divisors (see below), whose sum is σ = 5181320670. Its totient is φ = 1727106888.

The previous prime is 3454213771. The next prime is 3454213783. The reversal of 3454213778 is 8773124543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8773124543 = 19 ⋅461743397.

It can be written as a sum of positive squares in only one way, i.e., 3149117689 + 305096089 = 56117^2 + 17467^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3454213771) 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 as a sum of consecutive naturals, namely, 863553443 + ... + 863553446.

Almost surely, 2^3454213778 is an apocalyptic number.

3454213778 is a deficient number, since it is larger than the sum of its proper divisors (1727106892).

3454213778 is a wasteful number, since it uses less digits than its factorization.

3454213778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727106891.

The product of its digits is 564480, while the sum is 44.

The square root of 3454213778 is about 58772.5597366662. The cubic root of 3454213778 is about 1511.6447405996.

The spelling of 3454213778 in words is "three billion, four hundred fifty-four million, two hundred thirteen thousand, seven hundred seventy-eight".