980291646538 has 4 divisors (see below), whose sum is σ = 1470437469810. Its totient is φ = 490145823268.

The previous prime is 980291646533. The next prime is 980291646547. The reversal of 980291646538 is 835646192089.

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

It can be written as a sum of positive squares in only one way, i.e., 641564154529 + 338727492009 = 800977^2 + 582003^2 .

It is not an unprimeable number, because it can be changed into a prime (980291646533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245072911633 + ... + 245072911636.

Almost surely, 2^980291646538 is an apocalyptic number.

980291646538 is a deficient number, since it is larger than the sum of its proper divisors (490145823272).

980291646538 is a wasteful number, since it uses less digits than its factorization.

980291646538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490145823271.

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 980291646538 in words is "nine hundred eighty billion, two hundred ninety-one million, six hundred forty-six thousand, five hundred thirty-eight".