1428151111 has 2 divisors, whose sum is σ = 1428151112. Its totient is φ = 1428151110.

The previous prime is 1428151063. The next prime is 1428151201. The reversal of 1428151111 is 1111518241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428151111 - 2²³ = 1419762503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428151411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714075555 + 714075556.

It is an arithmetic number, because the mean of its divisors is an integer number (714075556).

Almost surely, 2^1428151111 is an apocalyptic number.

1428151111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428151111 is an equidigital number, since it uses as much as digits as its factorization.

1428151111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 25.

The square root of 1428151111 is about 37790.8866130447. The cubic root of 1428151111 is about 1126.1374138617.

Adding to 1428151111 its reverse (1111518241), we get a palindrome (2539669352).

The spelling of 1428151111 in words is "one billion, four hundred twenty-eight million, one hundred fifty-one thousand, one hundred eleven".