7842797213 has 8 divisors (see below), whose sum is σ = 7935651000. Its totient is φ = 7750048768.

The previous prime is 7842797203. The next prime is 7842797251. The reversal of 7842797213 is 3127972487.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 620856889 + 7221940324 = 24917^2 + 84982^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7842797213 - 2⁴ = 7842797197 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 (7842797203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128813 + ... + 179661.

It is an arithmetic number, because the mean of its divisors is an integer number (991956375).

Almost surely, 2^7842797213 is an apocalyptic number.

It is an amenable number.

7842797213 is a deficient number, since it is larger than the sum of its proper divisors (92853787).

7842797213 is a wasteful number, since it uses less digits than its factorization.

7842797213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52671.

The product of its digits is 1185408, while the sum is 50.

The square root of 7842797213 is about 88559.5687263663. The cubic root of 7842797213 is about 1986.8130105018.

The spelling of 7842797213 in words is "seven billion, eight hundred forty-two million, seven hundred ninety-seven thousand, two hundred thirteen".