1613587013 has 4 divisors (see below), whose sum is σ = 1614698988. Its totient is φ = 1612475040.

The previous prime is 1613586973. The next prime is 1613587049. The reversal of 1613587013 is 3107853161.

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 1544647204 + 68939809 = 39302^2 + 8303^2 .

It is a cyclic number.

It is not a de Polignac number, because 1613587013 - 2⁸ = 1613586757 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 (1613587813) 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, 553808 + ... + 556713.

It is an arithmetic number, because the mean of its divisors is an integer number (403674747).

Almost surely, 2^1613587013 is an apocalyptic number.

It is an amenable number.

1613587013 is a deficient number, since it is larger than the sum of its proper divisors (1111975).

1613587013 is a wasteful number, since it uses less digits than its factorization.

1613587013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111974.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1613587013 is about 40169.4786249461. The cubic root of 1613587013 is about 1172.9084900777.

The spelling of 1613587013 in words is "one billion, six hundred thirteen million, five hundred eighty-seven thousand, thirteen".