9934512378 has 16 divisors (see below), whose sum is σ = 22707456960. Its totient is φ = 2838432096.

The previous prime is 9934512373. The next prime is 9934512449. The reversal of 9934512378 is 8732154399.

It is a self number, because there is not a number n which added to its sum of digits gives 9934512378.

It is not an unprimeable number, because it can be changed into a prime (9934512373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118267963 + ... + 118268046.

It is an arithmetic number, because the mean of its divisors is an integer number (1419216060).

Almost surely, 2^9934512378 is an apocalyptic number.

9934512378 is an abundant number, since it is smaller than the sum of its proper divisors (12772944582).

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

9934512378 is a wasteful number, since it uses less digits than its factorization.

9934512378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236536021.

The product of its digits is 1632960, while the sum is 51.

The square root of 9934512378 is about 99672.0240488774. The cubic root of 9934512378 is about 2149.7214261749.

The spelling of 9934512378 in words is "nine billion, nine hundred thirty-four million, five hundred twelve thousand, three hundred seventy-eight".