1666653053 has 8 divisors (see below), whose sum is σ = 1795361568. Its totient is φ = 1538016624.

The previous prime is 1666653047. The next prime is 1666653067. The reversal of 1666653053 is 3503566661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1666653053 - 2⁶ = 1666652989 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1666653053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666653353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36026 + ... + 68052.

It is an arithmetic number, because the mean of its divisors is an integer number (224420196).

Almost surely, 2^1666653053 is an apocalyptic number.

1666653053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1666653053 is a deficient number, since it is larger than the sum of its proper divisors (128708515).

1666653053 is a wasteful number, since it uses less digits than its factorization.

1666653053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36043.

The product of its (nonzero) digits is 291600, while the sum is 41.

The square root of 1666653053 is about 40824.6623133615. The cubic root of 1666653053 is about 1185.6278733306.

The spelling of 1666653053 in words is "one billion, six hundred sixty-six million, six hundred fifty-three thousand, fifty-three".