1490820949 has 2 divisors, whose sum is σ = 1490820950. Its totient is φ = 1490820948.

The previous prime is 1490820931. The next prime is 1490820977. The reversal of 1490820949 is 9490280941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1483020100 + 7800849 = 38510^2 + 2793^2 .

It is a cyclic number.

It is not a de Polignac number, because 1490820949 - 2²⁹ = 953950037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1490820899 and 1490820908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1490820979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745410474 + 745410475.

It is an arithmetic number, because the mean of its divisors is an integer number (745410475).

Almost surely, 2^1490820949 is an apocalyptic number.

It is an amenable number.

1490820949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490820949 is an equidigital number, since it uses as much as digits as its factorization.

1490820949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1490820949 is about 38611.1505785570. The cubic root of 1490820949 is about 1142.3744877897.

The spelling of 1490820949 in words is "one billion, four hundred ninety million, eight hundred twenty thousand, nine hundred forty-nine".