1617261013 has 8 divisors (see below), whose sum is σ = 1633915800. Its totient is φ = 1600639488.

The previous prime is 1617261011. The next prime is 1617261043. The reversal of 1617261013 is 3101627161.

It can be written as a sum of positive squares in 4 ways, for example, as 231709284 + 1385551729 = 15222^2 + 37223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1617261013 - 2¹ = 1617261011 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 (1617261011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96093 + ... + 111661.

It is an arithmetic number, because the mean of its divisors is an integer number (204239475).

Almost surely, 2^1617261013 is an apocalyptic number.

It is an amenable number.

1617261013 is a deficient number, since it is larger than the sum of its proper divisors (16654787).

1617261013 is a wasteful number, since it uses less digits than its factorization.

1617261013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16631.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1617261013 is about 40215.1838613228. The cubic root of 1617261013 is about 1173.7980194882.

Adding to 1617261013 its reverse (3101627161), we get a palindrome (4718888174).

The spelling of 1617261013 in words is "one billion, six hundred seventeen million, two hundred sixty-one thousand, thirteen".