2061653453 has 4 divisors (see below), whose sum is σ = 2062217820. Its totient is φ = 2061089088.

The previous prime is 2061653411. The next prime is 2061653467. The reversal of 2061653453 is 3543561602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1007872009 + 1053781444 = 31747^2 + 32462^2 .

It is a cyclic number.

It is not a de Polignac number, because 2061653453 - 2²⁰ = 2060604877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061653753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276668 + ... + 284021.

It is an arithmetic number, because the mean of its divisors is an integer number (515554455).

Almost surely, 2^2061653453 is an apocalyptic number.

It is an amenable number.

2061653453 is a deficient number, since it is larger than the sum of its proper divisors (564367).

2061653453 is an equidigital number, since it uses as much as digits as its factorization.

2061653453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564366.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 2061653453 is about 45405.4341791817. The cubic root of 2061653453 is about 1272.7366644240.

The spelling of 2061653453 in words is "two billion, sixty-one million, six hundred fifty-three thousand, four hundred fifty-three".