1613646453 has 4 divisors (see below), whose sum is σ = 2151528608. Its totient is φ = 1075764300.

The previous prime is 1613646431. The next prime is 1613646467. The reversal of 1613646453 is 3546463161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1613646453 - 2⁹ = 1613645941 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 (1613646403) 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, 268941073 + ... + 268941078.

It is an arithmetic number, because the mean of its divisors is an integer number (537882152).

Almost surely, 2^1613646453 is an apocalyptic number.

It is an amenable number.

1613646453 is a deficient number, since it is larger than the sum of its proper divisors (537882155).

1613646453 is an equidigital number, since it uses as much as digits as its factorization.

1613646453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537882154.

The product of its digits is 155520, while the sum is 39.

The square root of 1613646453 is about 40170.2184833491. The cubic root of 1613646453 is about 1172.9228921158.

The spelling of 1613646453 in words is "one billion, six hundred thirteen million, six hundred forty-six thousand, four hundred fifty-three".