981738436479 has 4 divisors (see below), whose sum is σ = 1308984581976. Its totient is φ = 654492290984.

The previous prime is 981738436463. The next prime is 981738436487. The reversal of 981738436479 is 974634837189.

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 981738436479 - 2⁴ = 981738436463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981738436409) 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, 163623072744 + ... + 163623072749.

It is an arithmetic number, because the mean of its divisors is an integer number (327246145494).

Almost surely, 2^981738436479 is an apocalyptic number.

981738436479 is a deficient number, since it is larger than the sum of its proper divisors (327246145497).

981738436479 is a wasteful number, since it uses less digits than its factorization.

981738436479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327246145496.

The product of its digits is 219469824, while the sum is 69.

The spelling of 981738436479 in words is "nine hundred eighty-one billion, seven hundred thirty-eight million, four hundred thirty-six thousand, four hundred seventy-nine".