19152139 has 2 divisors, whose sum is σ = 19152140. Its totient is φ = 19152138.

The previous prime is 19152127. The next prime is 19152181. The reversal of 19152139 is 93125191.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (93125191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19152139 - 2¹¹ = 19150091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19152139.

It is not a weakly prime, because it can be changed into another prime (19152739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9576069 + 9576070.

It is an arithmetic number, because the mean of its divisors is an integer number (9576070).

Almost surely, 2^19152139 is an apocalyptic number.

19152139 is a deficient number, since it is larger than the sum of its proper divisors (1).

19152139 is an equidigital number, since it uses as much as digits as its factorization.

19152139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 31.

The square root of 19152139 is about 4376.3156878818. The cubic root of 19152139 is about 267.5504967703.

It can be divided in two parts, 19152 and 139, that added together give a palindrome (19291).

The spelling of 19152139 in words is "nineteen million, one hundred fifty-two thousand, one hundred thirty-nine".