3122289349778 has 4 divisors (see below), whose sum is σ = 4683434024670. Its totient is φ = 1561144674888.

The previous prime is 3122289349769. The next prime is 3122289349787. The reversal of 3122289349778 is 8779439822213.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3122289349769) and next prime (3122289349787).

It can be written as a sum of positive squares in only one way, i.e., 2302281224929 + 820008124849 = 1517327^2 + 905543^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780572337443 + ... + 780572337446.

Almost surely, 2^{3122289349778} is an apocalyptic number.

3122289349778 is a deficient number, since it is larger than the sum of its proper divisors (1561144674892).

3122289349778 is a wasteful number, since it uses less digits than its factorization.

3122289349778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561144674891.

The product of its digits is 73156608, while the sum is 65.

The spelling of 3122289349778 in words is "three trillion, one hundred twenty-two billion, two hundred eighty-nine million, three hundred forty-nine thousand, seven hundred seventy-eight".