1493171693 has 16 divisors (see below), whose sum is σ = 1707209280. Its totient is φ = 1293739776.

The previous prime is 1493171683. The next prime is 1493171737. The reversal of 1493171693 is 3961713941.

It is a cyclic number.

It is not a de Polignac number, because 1493171693 - 2⁸ = 1493171437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493171683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74846 + ... + 92672.

It is an arithmetic number, because the mean of its divisors is an integer number (106700580).

Almost surely, 2^1493171693 is an apocalyptic number.

1493171693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1493171693 is a deficient number, since it is larger than the sum of its proper divisors (214037587).

1493171693 is a wasteful number, since it uses less digits than its factorization.

1493171693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18236.

The product of its digits is 122472, while the sum is 44.

The square root of 1493171693 is about 38641.5798460674. The cubic root of 1493171693 is about 1142.9746089819.

The spelling of 1493171693 in words is "one billion, four hundred ninety-three million, one hundred seventy-one thousand, six hundred ninety-three".