1428516149 has 4 divisors (see below), whose sum is σ = 1428723660. Its totient is φ = 1428308640.

The previous prime is 1428516119. The next prime is 1428516151. The reversal of 1428516149 is 9416158241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9416158241 = 7 ⋅1345165463.

It can be written as a sum of positive squares in 2 ways, for example, as 378302500 + 1050213649 = 19450^2 + 32407^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428516149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428516109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93062 + ... + 107319.

It is an arithmetic number, because the mean of its divisors is an integer number (357180915).

Almost surely, 2^1428516149 is an apocalyptic number.

It is an amenable number.

1428516149 is a deficient number, since it is larger than the sum of its proper divisors (207511).

1428516149 is an equidigital number, since it uses as much as digits as its factorization.

1428516149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207510.

The product of its digits is 69120, while the sum is 41.

The square root of 1428516149 is about 37795.7160138553. The cubic root of 1428516149 is about 1126.2333532729.

The spelling of 1428516149 in words is "one billion, four hundred twenty-eight million, five hundred sixteen thousand, one hundred forty-nine".