1606354653 has 4 divisors (see below), whose sum is σ = 2141806208. Its totient is φ = 1070903100.

The previous prime is 1606354613. The next prime is 1606354679. The reversal of 1606354653 is 3564536061.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3564536061 = 3 ⋅1188178687.

It is not a de Polignac number, because 1606354653 - 2¹⁴ = 1606338269 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 (1606354613) 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, 267725773 + ... + 267725778.

It is an arithmetic number, because the mean of its divisors is an integer number (535451552).

Almost surely, 2^1606354653 is an apocalyptic number.

It is an amenable number.

1606354653 is a deficient number, since it is larger than the sum of its proper divisors (535451555).

1606354653 is an equidigital number, since it uses as much as digits as its factorization.

1606354653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535451554.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 1606354653 is about 40079.3544483940. The cubic root of 1606354653 is about 1171.1534763638.

The spelling of 1606354653 in words is "one billion, six hundred six million, three hundred fifty-four thousand, six hundred fifty-three".