1238161799 has 8 divisors (see below), whose sum is σ = 1498279968. Its totient is φ = 998853120.

The previous prime is 1238161781. The next prime is 1238161819. The reversal of 1238161799 is 9971618321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1238161799 - 2¹² = 1238157703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238161709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5202242 + ... + 5202479.

It is an arithmetic number, because the mean of its divisors is an integer number (187284996).

Almost surely, 2^1238161799 is an apocalyptic number.

1238161799 is a deficient number, since it is larger than the sum of its proper divisors (260118169).

1238161799 is a wasteful number, since it uses less digits than its factorization.

1238161799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10404745.

The product of its digits is 163296, while the sum is 47.

The square root of 1238161799 is about 35187.5233427987. The cubic root of 1238161799 is about 1073.8059354691.

The spelling of 1238161799 in words is "one billion, two hundred thirty-eight million, one hundred sixty-one thousand, seven hundred ninety-nine".