1416128909 has 6 divisors (see below), whose sum is σ = 1533441546. Its totient is φ = 1307195760.

The previous prime is 1416128897. The next prime is 1416128911. The reversal of 1416128909 is 9098216141.

It can be written as a sum of positive squares in 3 ways, for example, as 187416100 + 1228712809 = 13690^2 + 35053^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1416128909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1416128309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4189562 + ... + 4189899.

It is an arithmetic number, because the mean of its divisors is an integer number (255573591).

Almost surely, 2^1416128909 is an apocalyptic number.

It is an amenable number.

1416128909 is a deficient number, since it is larger than the sum of its proper divisors (117312637).

1416128909 is an equidigital number, since it uses as much as digits as its factorization.

1416128909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8379487 (or 8379474 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1416128909 is about 37631.4882644840. The cubic root of 1416128909 is about 1122.9685569225.

The spelling of 1416128909 in words is "one billion, four hundred sixteen million, one hundred twenty-eight thousand, nine hundred nine".