1489908851 has 2 divisors, whose sum is σ = 1489908852. Its totient is φ = 1489908850.

The previous prime is 1489908841. The next prime is 1489908853. The reversal of 1489908851 is 1588099841.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1489908851 - 2⁶ = 1489908787 is a prime.

Together with 1489908853, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1489908793 and 1489908802.

It is not a weakly prime, because it can be changed into another prime (1489908853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744954425 + 744954426.

It is an arithmetic number, because the mean of its divisors is an integer number (744954426).

Almost surely, 2^1489908851 is an apocalyptic number.

1489908851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489908851 is an equidigital number, since it uses as much as digits as its factorization.

1489908851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 53.

The square root of 1489908851 is about 38599.3374425002. The cubic root of 1489908851 is about 1142.1414685146.

The spelling of 1489908851 in words is "one billion, four hundred eighty-nine million, nine hundred eight thousand, eight hundred fifty-one".