1655165493 has 12 divisors (see below), whose sum is σ = 2397209100. Its totient is φ = 1100483136.

The previous prime is 1655165483. The next prime is 1655165539. The reversal of 1655165493 is 3945615561.

1655165493 is a `hidden beast` number, since 1 + 6 + 551 + 6 + 5 + 4 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 277122609 + 1378042884 = 16647^2 + 37122^2 .

It is not a de Polignac number, because 1655165493 - 2¹⁷ = 1655034421 is a prime.

It is a super-3 number, since 3×1655165493³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655165453) 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, 243168 + ... + 249881.

It is an arithmetic number, because the mean of its divisors is an integer number (199767425).

Almost surely, 2^1655165493 is an apocalyptic number.

It is an amenable number.

1655165493 is a deficient number, since it is larger than the sum of its proper divisors (742043607).

1655165493 is a wasteful number, since it uses less digits than its factorization.

1655165493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493428 (or 493425 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The square root of 1655165493 is about 40683.7251612976. The cubic root of 1655165493 is about 1182.8975742261.

The spelling of 1655165493 in words is "one billion, six hundred fifty-five million, one hundred sixty-five thousand, four hundred ninety-three".