1208138467 has 16 divisors (see below), whose sum is σ = 1261963584. Its totient is φ = 1155600000.

The previous prime is 1208138447. The next prime is 1208138501. The reversal of 1208138467 is 7648318021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1208138467 is a prime.

It is a super-2 number, since 2×1208138467² = 2919197110890220178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208138447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563217 + ... + 565357.

It is an arithmetic number, because the mean of its divisors is an integer number (78872724).

Almost surely, 2^1208138467 is an apocalyptic number.

1208138467 is a deficient number, since it is larger than the sum of its proper divisors (53825117).

1208138467 is a wasteful number, since it uses less digits than its factorization.

1208138467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 1208138467 is about 34758.2863070089. The cubic root of 1208138467 is about 1065.0554952090.

The spelling of 1208138467 in words is "one billion, two hundred eight million, one hundred thirty-eight thousand, four hundred sixty-seven".