978380963 has 4 divisors (see below), whose sum is σ = 1118149680. Its totient is φ = 838612248.

The previous prime is 978380947. The next prime is 978380981. The reversal of 978380963 is 369083879.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 978380963 - 2⁴ = 978380947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (978380903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69884348 + ... + 69884361.

It is an arithmetic number, because the mean of its divisors is an integer number (279537420).

Almost surely, 2^978380963 is an apocalyptic number.

978380963 is a deficient number, since it is larger than the sum of its proper divisors (139768717).

978380963 is a wasteful number, since it uses less digits than its factorization.

978380963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139768716.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 978380963 is about 31279.0818759119. The cubic root of 978380963 is about 992.7410900547.

The spelling of 978380963 in words is "nine hundred seventy-eight million, three hundred eighty thousand, nine hundred sixty-three".