1653801953 has 8 divisors (see below), whose sum is σ = 1695133440. Its totient is φ = 1612517920.

The previous prime is 1653801949. The next prime is 1653802027. The reversal of 1653801953 is 3591083561.

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 1653801953 - 2² = 1653801949 is a prime.

It is a super-2 number, since 2×1653801953² = 5470121799493228418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1653801953.

It is not an unprimeable number, because it can be changed into a prime (1653801353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64808 + ... + 86646.

It is an arithmetic number, because the mean of its divisors is an integer number (211891680).

Almost surely, 2^1653801953 is an apocalyptic number.

It is an amenable number.

1653801953 is a deficient number, since it is larger than the sum of its proper divisors (41331487).

1653801953 is a wasteful number, since it uses less digits than its factorization.

1653801953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23727.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 1653801953 is about 40666.9639019192. The cubic root of 1653801953 is about 1182.5726578189.

The spelling of 1653801953 in words is "one billion, six hundred fifty-three million, eight hundred one thousand, nine hundred fifty-three".