348936393978 has 48 divisors (see below), whose sum is σ = 800622014400. Its totient is φ = 109453711488.

The previous prime is 348936393977. The next prime is 348936394013. The reversal of 348936393978 is 879393639843.

348936393978 is a `hidden beast` number, since 34 + 89 + 363 + 93 + 9 + 78 = 666.

It is not an unprimeable number, because it can be changed into a prime (348936393977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2028451 + ... + 2193737.

It is an arithmetic number, because the mean of its divisors is an integer number (16679625300).

Almost surely, 2^348936393978 is an apocalyptic number.

348936393978 is an abundant number, since it is smaller than the sum of its proper divisors (451685620422).

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

348936393978 is a wasteful number, since it uses less digits than its factorization.

348936393978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172211 (or 172208 counting only the distinct ones).

The product of its digits is 634894848, while the sum is 72.

The spelling of 348936393978 in words is "three hundred forty-eight billion, nine hundred thirty-six million, three hundred ninety-three thousand, nine hundred seventy-eight".