7854378213 has 16 divisors (see below), whose sum is σ = 12025843200. Its totient is φ = 4509690480.

The previous prime is 7854378193. The next prime is 7854378223. The reversal of 7854378213 is 3128734587.

It is not a de Polignac number, because 7854378213 - 2⁸ = 7854377957 is a prime.

It is a super-2 number, since 2×7854378213² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7854378223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6262833 + ... + 6264086.

It is an arithmetic number, because the mean of its divisors is an integer number (751615200).

Almost surely, 2^7854378213 is an apocalyptic number.

It is an amenable number.

7854378213 is a deficient number, since it is larger than the sum of its proper divisors (4171464987).

7854378213 is a wasteful number, since it uses less digits than its factorization.

7854378213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12526952.

The product of its digits is 1128960, while the sum is 48.

The square root of 7854378213 is about 88624.9299745845. The cubic root of 7854378213 is about 1987.7904664037.

The spelling of 7854378213 in words is "seven billion, eight hundred fifty-four million, three hundred seventy-eight thousand, two hundred thirteen".