978286541 has 4 divisors (see below), whose sum is σ = 980610684. Its totient is φ = 975962400.

The previous prime is 978286537. The next prime is 978286571. The reversal of 978286541 is 145682879.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145682879 = 197 ⋅739507.

It can be written as a sum of positive squares in 2 ways, for example, as 12630916 + 965655625 = 3554^2 + 31075^2 .

It is a cyclic number.

It is not a de Polignac number, because 978286541 - 2² = 978286537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 978286541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978286571) 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, 1161440 + ... + 1162281.

It is an arithmetic number, because the mean of its divisors is an integer number (245152671).

Almost surely, 2^978286541 is an apocalyptic number.

It is an amenable number.

978286541 is a deficient number, since it is larger than the sum of its proper divisors (2324143).

978286541 is a wasteful number, since it uses less digits than its factorization.

978286541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324142.

The product of its digits is 967680, while the sum is 50.

The square root of 978286541 is about 31277.5724921229. The cubic root of 978286541 is about 992.7091530695.

The spelling of 978286541 in words is "nine hundred seventy-eight million, two hundred eighty-six thousand, five hundred forty-one".