1915728151 has 2 divisors, whose sum is σ = 1915728152. Its totient is φ = 1915728150.

The previous prime is 1915728109. The next prime is 1915728203. The reversal of 1915728151 is 1518275191.

It is a weak prime.

It is an emirp because it is prime and its reverse (1518275191) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1915728151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1915728251) 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, 957864075 + 957864076.

It is an arithmetic number, because the mean of its divisors is an integer number (957864076).

Almost surely, 2^1915728151 is an apocalyptic number.

1915728151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1915728151 is an equidigital number, since it uses as much as digits as its factorization.

1915728151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 40.

The square root of 1915728151 is about 43769.0318718612. The cubic root of 1915728151 is about 1241.9705381788.

The spelling of 1915728151 in words is "one billion, nine hundred fifteen million, seven hundred twenty-eight thousand, one hundred fifty-one".