1284952203393 has 16 divisors (see below), whose sum is σ = 1814759798400. Its totient is φ = 805929129216.

The previous prime is 1284952203389. The next prime is 1284952203439. The reversal of 1284952203393 is 3933022594821.

It is not a de Polignac number, because 1284952203393 - 2² = 1284952203389 is a prime.

It is a super-2 number, since 2×1284952203393² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (1284952203193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4796293 + ... + 5057106.

It is an arithmetic number, because the mean of its divisors is an integer number (113422487400).

Almost surely, 2^{1284952203393} is an apocalyptic number.

It is an amenable number.

1284952203393 is a deficient number, since it is larger than the sum of its proper divisors (529807595007).

1284952203393 is a wasteful number, since it uses less digits than its factorization.

1284952203393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9855976.

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 1284952203393 in words is "one trillion, two hundred eighty-four billion, nine hundred fifty-two million, two hundred three thousand, three hundred ninety-three".