1609331013 has 12 divisors (see below), whose sum is σ = 2335016320. Its totient is φ = 1068074856.

The previous prime is 1609330981. The next prime is 1609331033. The reversal of 1609331013 is 3101339061.

1609331013 is a `hidden beast` number, since 1 + 609 + 33 + 10 + 13 = 666.

It is not a de Polignac number, because 1609331013 - 2⁵ = 1609330981 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 (1609331033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398923 + ... + 402936.

Almost surely, 2^1609331013 is an apocalyptic number.

It is an amenable number.

1609331013 is a deficient number, since it is larger than the sum of its proper divisors (725685307).

1609331013 is a wasteful number, since it uses less digits than its factorization.

1609331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802088 (or 802085 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 1609331013 is about 40116.4681022644. The cubic root of 1609331013 is about 1171.8763602502.

The spelling of 1609331013 in words is "one billion, six hundred nine million, three hundred thirty-one thousand, thirteen".