1493666947 has 2 divisors, whose sum is σ = 1493666948. Its totient is φ = 1493666946.

The previous prime is 1493666899. The next prime is 1493666981. The reversal of 1493666947 is 7496663941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1493666947 - 2¹⁵ = 1493634179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1493666047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 746833473 + 746833474.

It is an arithmetic number, because the mean of its divisors is an integer number (746833474).

Almost surely, 2^1493666947 is an apocalyptic number.

1493666947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1493666947 is an equidigital number, since it uses as much as digits as its factorization.

1493666947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 55.

The square root of 1493666947 is about 38647.9876190210. The cubic root of 1493666947 is about 1143.1009619832.

The spelling of 1493666947 in words is "one billion, four hundred ninety-three million, six hundred sixty-six thousand, nine hundred forty-seven".