1493643573 has 6 divisors (see below), whose sum is σ = 2157485174. Its totient is φ = 995762376.

The previous prime is 1493643563. The next prime is 1493643577. The reversal of 1493643573 is 3753463941.

1493643573 is a `hidden beast` number, since 1 + 4 + 9 + 36 + 43 + 573 = 666.

It can be written as a sum of positive squares in only one way, i.e., 880486929 + 613156644 = 29673^2 + 24762^2 .

It is not a de Polignac number, because 1493643573 - 2¹⁴ = 1493627189 is a prime.

It is a super-2 number, since 2×1493643573² = 4461942246328412658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493643577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82980190 + ... + 82980207.

Almost surely, 2^1493643573 is an apocalyptic number.

It is an amenable number.

1493643573 is a deficient number, since it is larger than the sum of its proper divisors (663841601).

1493643573 is a wasteful number, since it uses less digits than its factorization.

1493643573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165960403 (or 165960400 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 1493643573 is about 38647.6852217568. The cubic root of 1493643573 is about 1143.0949992570.

The spelling of 1493643573 in words is "one billion, four hundred ninety-three million, six hundred forty-three thousand, five hundred seventy-three".