1238123495 has 16 divisors (see below), whose sum is σ = 1699556160. Its totient is φ = 848219904.

The previous prime is 1238123483. The next prime is 1238123501. The reversal of 1238123495 is 5943218321.

It is not a de Polignac number, because 1238123495 - 2¹⁰ = 1238122471 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23849 + ... + 55181.

It is an arithmetic number, because the mean of its divisors is an integer number (106222260).

Almost surely, 2^1238123495 is an apocalyptic number.

1238123495 is a deficient number, since it is larger than the sum of its proper divisors (461432665).

1238123495 is a wasteful number, since it uses less digits than its factorization.

1238123495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32474.

The product of its digits is 51840, while the sum is 38.

The square root of 1238123495 is about 35186.9790547583. The cubic root of 1238123495 is about 1073.7948622026.

The spelling of 1238123495 in words is "one billion, two hundred thirty-eight million, one hundred twenty-three thousand, four hundred ninety-five".