1662541253 has 8 divisors (see below), whose sum is σ = 1719599616. Its totient is φ = 1605697200.

The previous prime is 1662541229. The next prime is 1662541273. The reversal of 1662541253 is 3521452661.

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 1662541253 - 2²⁴ = 1645764037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662541273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37718 + ... + 68903.

It is an arithmetic number, because the mean of its divisors is an integer number (214949952).

Almost surely, 2^1662541253 is an apocalyptic number.

It is an amenable number.

1662541253 is a deficient number, since it is larger than the sum of its proper divisors (57058363).

1662541253 is a wasteful number, since it uses less digits than its factorization.

1662541253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107155.

The product of its digits is 43200, while the sum is 35.

The square root of 1662541253 is about 40774.2719493555. The cubic root of 1662541253 is about 1184.6520495030.

The spelling of 1662541253 in words is "one billion, six hundred sixty-two million, five hundred forty-one thousand, two hundred fifty-three".