1238095951285 has 12 divisors (see below), whose sum is σ = 1573123184388. Its totient is φ = 932205698048.

The previous prime is 1238095951259. The next prime is 1238095951361. The reversal of 1238095951285 is 5821595908321.

It can be written as a sum of positive squares in 6 ways, for example, as 127082981169 + 1111012970116 = 356487^2 + 1054046^2 .

It is not a de Polignac number, because 1238095951285 - 2¹⁵ = 1238095918517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10198221 + ... + 10318909.

It is an arithmetic number, because the mean of its divisors is an integer number (131093598699).

Almost surely, 2^{1238095951285} is an apocalyptic number.

It is an amenable number.

1238095951285 is a deficient number, since it is larger than the sum of its proper divisors (335027233103).

1238095951285 is an frugal number, since it uses more digits than its factorization.

1238095951285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241400 (or 120711 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 58.

The spelling of 1238095951285 in words is "one trillion, two hundred thirty-eight billion, ninety-five million, nine hundred fifty-one thousand, two hundred eighty-five".