1187506528139 has 2 divisors, whose sum is σ = 1187506528140. Its totient is φ = 1187506528138.

The previous prime is 1187506528127. The next prime is 1187506528157. The reversal of 1187506528139 is 9318256057811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1187506528139 - 2⁴ = 1187506528123 is a prime.

It is not a weakly prime, because it can be changed into another prime (1187503528139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593753264069 + 593753264070.

It is an arithmetic number, because the mean of its divisors is an integer number (593753264070).

Almost surely, 2^{1187506528139} is an apocalyptic number.

1187506528139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1187506528139 is an equidigital number, since it uses as much as digits as its factorization.

1187506528139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 1187506528139 in words is "one trillion, one hundred eighty-seven billion, five hundred six million, five hundred twenty-eight thousand, one hundred thirty-nine".