9271072378 has 16 divisors (see below), whose sum is σ = 13933192896. Its totient is φ = 4626685440.

The previous prime is 9271072309. The next prime is 9271072387. The reversal of 9271072378 is 8732701729.

It is a happy number.

It is a super-2 number, since 2×9271072378² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3418443 + ... + 3421153.

It is an arithmetic number, because the mean of its divisors is an integer number (870824556).

Almost surely, 2^9271072378 is an apocalyptic number.

9271072378 is a deficient number, since it is larger than the sum of its proper divisors (4662120518).

9271072378 is a wasteful number, since it uses less digits than its factorization.

9271072378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349.

The product of its (nonzero) digits is 296352, while the sum is 46.

The square root of 9271072378 is about 96286.4080646900. The cubic root of 9271072378 is about 2100.7610528035.

The spelling of 9271072378 in words is "nine billion, two hundred seventy-one million, seventy-two thousand, three hundred seventy-eight".