1238653950243 has 32 divisors (see below), whose sum is σ = 1694155948032. Its totient is φ = 804739536000.

The previous prime is 1238653950181. The next prime is 1238653950253. The reversal of 1238653950243 is 3420593568321.

It is not a de Polignac number, because 1238653950243 - 2¹⁶ = 1238653884707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1238653950253) 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 31 ways as a sum of consecutive naturals, for example, 10524921 + ... + 10641957.

It is an arithmetic number, because the mean of its divisors is an integer number (52942373376).

Almost surely, 2^{1238653950243} is an apocalyptic number.

1238653950243 is a deficient number, since it is larger than the sum of its proper divisors (455501997789).

1238653950243 is a wasteful number, since it uses less digits than its factorization.

1238653950243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117635.

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 1238653950243 in words is "one trillion, two hundred thirty-eight billion, six hundred fifty-three million, nine hundred fifty thousand, two hundred forty-three".