1009181864596 has 6 divisors (see below), whose sum is σ = 1766068263050. Its totient is φ = 504590932296.

The previous prime is 1009181864539. The next prime is 1009181864597. The reversal of 1009181864596 is 6954681819001.

It can be written as a sum of positive squares in only one way, i.e., 556495112196 + 452686752400 = 745986^2 + 672820^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1009181864596.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009181864597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126147733071 + ... + 126147733078.

Almost surely, 2^{1009181864596} is an apocalyptic number.

It is an amenable number.

1009181864596 is a deficient number, since it is larger than the sum of its proper divisors (756886398454).

1009181864596 is a wasteful number, since it uses less digits than its factorization.

1009181864596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252295466153 (or 252295466151 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 1009181864596 in words is "one trillion, nine billion, one hundred eighty-one million, eight hundred sixty-four thousand, five hundred ninety-six".