1238238705 has 32 divisors (see below), whose sum is σ = 2182302720. Its totient is φ = 594521280.

The previous prime is 1238238679. The next prime is 1238238709. The reversal of 1238238705 is 5078328321.

It is not a de Polignac number, because 1238238705 - 2¹² = 1238234609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1238238709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19435 + ... + 53424.

It is an arithmetic number, because the mean of its divisors is an integer number (68196960).

Almost surely, 2^1238238705 is an apocalyptic number.

1238238705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1238238705 is a deficient number, since it is larger than the sum of its proper divisors (944064015).

1238238705 is a wasteful number, since it uses less digits than its factorization.

1238238705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72981.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 1238238705 is about 35188.6161279468. The cubic root of 1238238705 is about 1073.8281674611.

The spelling of 1238238705 in words is "one billion, two hundred thirty-eight million, two hundred thirty-eight thousand, seven hundred five".