1215139067 has 2 divisors, whose sum is σ = 1215139068. Its totient is φ = 1215139066.

The previous prime is 1215139049. The next prime is 1215139097. The reversal of 1215139067 is 7609315121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1215139067 - 2¹² = 1215134971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1215139097) by changing a digit.

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 as a sum of consecutive naturals, namely, 607569533 + 607569534.

It is an arithmetic number, because the mean of its divisors is an integer number (607569534).

Almost surely, 2^1215139067 is an apocalyptic number.

1215139067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1215139067 is an equidigital number, since it uses as much as digits as its factorization.

1215139067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 1215139067 is about 34858.8448890665. The cubic root of 1215139067 is about 1067.1087014384.

The spelling of 1215139067 in words is "one billion, two hundred fifteen million, one hundred thirty-nine thousand, sixty-seven".