1493509653 has 12 divisors (see below), whose sum is σ = 2284191468. Its totient is φ = 937104000.

The previous prime is 1493509651. The next prime is 1493509711. The reversal of 1493509653 is 3569053941.

1493509653 is a `hidden beast` number, since 1 + 4 + 93 + 509 + 6 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1326634929 + 166874724 = 36423^2 + 12918^2 .

It is not a de Polignac number, because 1493509653 - 2¹ = 1493509651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1493509599 and 1493509608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493509651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4880598 + ... + 4880903.

It is an arithmetic number, because the mean of its divisors is an integer number (190349289).

Almost surely, 2^1493509653 is an apocalyptic number.

It is an amenable number.

1493509653 is a deficient number, since it is larger than the sum of its proper divisors (790681815).

1493509653 is a wasteful number, since it uses less digits than its factorization.

1493509653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9761524 (or 9761521 counting only the distinct ones).

The product of its (nonzero) digits is 437400, while the sum is 45.

The square root of 1493509653 is about 38645.9526082616. The cubic root of 1493509653 is about 1143.0608349578.

The spelling of 1493509653 in words is "one billion, four hundred ninety-three million, five hundred nine thousand, six hundred fifty-three".