1655434513 has 4 divisors (see below), whose sum is σ = 1655859568. Its totient is φ = 1655009460.

The previous prime is 1655434481. The next prime is 1655434553. The reversal of 1655434513 is 3154345561.

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 a cyclic number.

It is not a de Polignac number, because 1655434513 - 2⁵ = 1655434481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655434553) 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, 206631 + ... + 214492.

It is an arithmetic number, because the mean of its divisors is an integer number (413964892).

Almost surely, 2^1655434513 is an apocalyptic number.

It is an amenable number.

1655434513 is a deficient number, since it is larger than the sum of its proper divisors (425055).

1655434513 is an equidigital number, since it uses as much as digits as its factorization.

1655434513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425054.

The product of its digits is 108000, while the sum is 37.

The square root of 1655434513 is about 40687.0312630450. The cubic root of 1655434513 is about 1182.9616576199.

The spelling of 1655434513 in words is "one billion, six hundred fifty-five million, four hundred thirty-four thousand, five hundred thirteen".