1065840973198 has 4 divisors (see below), whose sum is σ = 1598761459800. Its totient is φ = 532920486598.

The previous prime is 1065840973181. The next prime is 1065840973199. The reversal of 1065840973198 is 8913790485601.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1065840973198² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065840973199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266460243298 + ... + 266460243301.

It is an arithmetic number, because the mean of its divisors is an integer number (399690364950).

Almost surely, 2^{1065840973198} is an apocalyptic number.

1065840973198 is a deficient number, since it is larger than the sum of its proper divisors (532920486602).

1065840973198 is an equidigital number, since it uses as much as digits as its factorization.

1065840973198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532920486601.

The product of its (nonzero) digits is 13063680, while the sum is 61.

The spelling of 1065840973198 in words is "one trillion, sixty-five billion, eight hundred forty million, nine hundred seventy-three thousand, one hundred ninety-eight".