1611013 has 4 divisors (see below), whose sum is σ = 1650348. Its totient is φ = 1571680.

The previous prime is 1610993. The next prime is 1611031. The reversal of 1611013 is 3101161.

1611013 = 897² + 898².

It is a happy number.

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 804609 + 806404 = 897^2 + 898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611013 - 2⁵ = 1610981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1610984 and 1611002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611053) 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, 19606 + ... + 19687.

It is an arithmetic number, because the mean of its divisors is an integer number (412587).

2^1611013 is an apocalyptic number.

1611013 is the 898-th centered square number.

It is an amenable number.

1611013 is a deficient number, since it is larger than the sum of its proper divisors (39335).

1611013 is an equidigital number, since it uses as much as digits as its factorization.

1611013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39334.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1611013 is about 1269.2568691955. The cubic root of 1611013 is about 117.2284479006.

Adding to 1611013 its reverse (3101161), we get a palindrome (4712174).

The spelling of 1611013 in words is "one million, six hundred eleven thousand, thirteen".