1493636168 has 8 divisors (see below), whose sum is σ = 2800567830. Its totient is φ = 746818080.

The previous prime is 1493636149. The next prime is 1493636197. The reversal of 1493636168 is 8616363941.

It can be written as a sum of positive squares in only one way, i.e., 1469802244 + 23833924 = 38338^2 + 4882^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93352253 + ... + 93352268.

Almost surely, 2^1493636168 is an apocalyptic number.

It is an amenable number.

1493636168 is a deficient number, since it is larger than the sum of its proper divisors (1306931662).

1493636168 is a wasteful number, since it uses less digits than its factorization.

1493636168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186704527 (or 186704523 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 1493636168 is about 38647.5894202989. The cubic root of 1493636168 is about 1143.0931102226.

The spelling of 1493636168 in words is "one billion, four hundred ninety-three million, six hundred thirty-six thousand, one hundred sixty-eight".