1490320087 has 2 divisors, whose sum is σ = 1490320088. Its totient is φ = 1490320086.

The previous prime is 1490320057. The next prime is 1490320103. The reversal of 1490320087 is 7800230941.

It is a strong prime.

It is an emirp because it is prime and its reverse (7800230941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1490320087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1490320057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 745160043 + 745160044.

It is an arithmetic number, because the mean of its divisors is an integer number (745160044).

Almost surely, 2^1490320087 is an apocalyptic number.

1490320087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1490320087 is an equidigital number, since it uses as much as digits as its factorization.

1490320087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 1490320087 is about 38604.6640575980. The cubic root of 1490320087 is about 1142.2465412693.

The spelling of 1490320087 in words is "one billion, four hundred ninety million, three hundred twenty thousand, eighty-seven".