1493857087 has 2 divisors, whose sum is σ = 1493857088. Its totient is φ = 1493857086.

The previous prime is 1493857073. The next prime is 1493857097. The reversal of 1493857087 is 7807583941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1493857087 - 2¹¹ = 1493855039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1493857097) 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, 746928543 + 746928544.

It is an arithmetic number, because the mean of its divisors is an integer number (746928544).

Almost surely, 2^1493857087 is an apocalyptic number.

1493857087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493857087 is an equidigital number, since it uses as much as digits as its factorization.

1493857087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The square root of 1493857087 is about 38650.4474359612. The cubic root of 1493857087 is about 1143.1494645394.

The spelling of 1493857087 in words is "one billion, four hundred ninety-three million, eight hundred fifty-seven thousand, eighty-seven".