978381371 has 6 divisors (see below), whose sum is σ = 1067438316. Its totient is φ = 889343300.

The previous prime is 978381367. The next prime is 978381373. The reversal of 978381371 is 173183879.

It is not a de Polignac number, because 978381371 - 2² = 978381367 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978381373) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99026 + ... + 108456.

It is an arithmetic number, because the mean of its divisors is an integer number (177906386).

Almost surely, 2^978381371 is an apocalyptic number.

978381371 is a deficient number, since it is larger than the sum of its proper divisors (89056945).

978381371 is an frugal number, since it uses more digits than its factorization.

978381371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18873 (or 9442 counting only the distinct ones).

The product of its digits is 254016, while the sum is 47.

The square root of 978381371 is about 31279.0883978418. The cubic root of 978381371 is about 992.7412280508.

The spelling of 978381371 in words is "nine hundred seventy-eight million, three hundred eighty-one thousand, three hundred seventy-one".