1492985009 has 2 divisors, whose sum is σ = 1492985010. Its totient is φ = 1492985008.

The previous prime is 1492984981. The next prime is 1492985023. The reversal of 1492985009 is 9005892941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1241857600 + 251127409 = 35240^2 + 15847^2 .

It is an emirp because it is prime and its reverse (9005892941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1492985009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1492985209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746492504 + 746492505.

It is an arithmetic number, because the mean of its divisors is an integer number (746492505).

Almost surely, 2^1492985009 is an apocalyptic number.

It is an amenable number.

1492985009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1492985009 is an equidigital number, since it uses as much as digits as its factorization.

1492985009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 1492985009 is about 38639.1641860949. The cubic root of 1492985009 is about 1142.9269734764.

The spelling of 1492985009 in words is "one billion, four hundred ninety-two million, nine hundred eighty-five thousand, nine".