8340354378 has 48 divisors (see below), whose sum is σ = 18785029536. Its totient is φ = 2773446480.

The previous prime is 8340354353. The next prime is 8340354397. The reversal of 8340354378 is 8734530438.

8340354378 is a `hidden beast` number, since 8 + 34 + 0 + 3 + 543 + 78 = 666.

It is a super-2 number, since 2×8340354378² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184225 + ... + 224987.

It is an arithmetic number, because the mean of its divisors is an integer number (391354782).

Almost surely, 2^8340354378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8340354378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9392514768).

8340354378 is an abundant number, since it is smaller than the sum of its proper divisors (10444675158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8340354378 is a wasteful number, since it uses less digits than its factorization.

8340354378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41201 (or 41189 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The square root of 8340354378 is about 91325.5406663437. The cubic root of 8340354378 is about 2027.9698841857.

The spelling of 8340354378 in words is "eight billion, three hundred forty million, three hundred fifty-four thousand, three hundred seventy-eight".