978744649348 has 6 divisors (see below), whose sum is σ = 1712803136366. Its totient is φ = 489372324672.

The previous prime is 978744649291. The next prime is 978744649349. The reversal of 978744649348 is 843946447879.

It can be written as a sum of positive squares in only one way, i.e., 918841107844 + 59903541504 = 958562^2 + 244752^2 .

It is not an unprimeable number, because it can be changed into a prime (978744649349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122343081165 + ... + 122343081172.

Almost surely, 2^978744649348 is an apocalyptic number.

It is an amenable number.

978744649348 is a deficient number, since it is larger than the sum of its proper divisors (734058487018).

978744649348 is a wasteful number, since it uses less digits than its factorization.

978744649348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244686162341 (or 244686162339 counting only the distinct ones).

The product of its digits is 1170505728, while the sum is 73.

The spelling of 978744649348 in words is "nine hundred seventy-eight billion, seven hundred forty-four million, six hundred forty-nine thousand, three hundred forty-eight".