978319653 has 8 divisors (see below), whose sum is σ = 1304894208. Its totient is φ = 651979104.

The previous prime is 978319637. The next prime is 978319673. The reversal of 978319653 is 356913879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 978319653 - 2⁴ = 978319637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 978319596 and 978319605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978319673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48501 + ... + 65642.

It is an arithmetic number, because the mean of its divisors is an integer number (163111776).

Almost surely, 2^978319653 is an apocalyptic number.

It is an amenable number.

978319653 is a deficient number, since it is larger than the sum of its proper divisors (326574555).

978319653 is a wasteful number, since it uses less digits than its factorization.

978319653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117003.

The product of its digits is 1224720, while the sum is 51.

The square root of 978319653 is about 31278.1018126100. The cubic root of 978319653 is about 992.7203529969.

The spelling of 978319653 in words is "nine hundred seventy-eight million, three hundred nineteen thousand, six hundred fifty-three".