1191281485148 has 12 divisors (see below), whose sum is σ = 2092669378800. Its totient is φ = 593375948352.

The previous prime is 1191281485123. The next prime is 1191281485151. The reversal of 1191281485148 is 8415841821911.

It is a self number, because there is not a number n which added to its sum of digits gives 1191281485148.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566197373 + ... + 566199476.

It is an arithmetic number, because the mean of its divisors is an integer number (174389114900).

Almost surely, 2^{1191281485148} is an apocalyptic number.

It is an amenable number.

1191281485148 is a deficient number, since it is larger than the sum of its proper divisors (901387893652).

1191281485148 is a wasteful number, since it uses less digits than its factorization.

1191281485148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132397116 (or 1132397114 counting only the distinct ones).

The product of its digits is 737280, while the sum is 53.

The spelling of 1191281485148 in words is "one trillion, one hundred ninety-one billion, two hundred eighty-one million, four hundred eighty-five thousand, one hundred forty-eight".