281493602948 has 6 divisors (see below), whose sum is σ = 492613805166. Its totient is φ = 140746801472.

The previous prime is 281493602911. The next prime is 281493602983. The reversal of 281493602948 is 849206394182.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 270991042624 + 10502560324 = 520568^2 + 102482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 281493602893 and 281493602902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35186700365 + ... + 35186700372.

It is an arithmetic number, because the mean of its divisors is an integer number (82102300861).

Almost surely, 2^281493602948 is an apocalyptic number.

It is an amenable number.

281493602948 is a deficient number, since it is larger than the sum of its proper divisors (211120202218).

281493602948 is a wasteful number, since it uses less digits than its factorization.

281493602948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70373400741 (or 70373400739 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 281493602948 in words is "two hundred eighty-one billion, four hundred ninety-three million, six hundred two thousand, nine hundred forty-eight".