1498631987 has 2 divisors, whose sum is σ = 1498631988. Its totient is φ = 1498631986.

The previous prime is 1498631971. The next prime is 1498632007. The reversal of 1498631987 is 7891368941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1498631987 - 2⁴ = 1498631971 is a prime.

It is not a weakly prime, because it can be changed into another prime (1498631887) 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, 749315993 + 749315994.

It is an arithmetic number, because the mean of its divisors is an integer number (749315994).

Almost surely, 2^1498631987 is an apocalyptic number.

1498631987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1498631987 is an equidigital number, since it uses as much as digits as its factorization.

1498631987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 56.

The square root of 1498631987 is about 38712.1684616091. The cubic root of 1498631987 is about 1144.3661402711.

The spelling of 1498631987 in words is "one billion, four hundred ninety-eight million, six hundred thirty-one thousand, nine hundred eighty-seven".