1021611613 has 8 divisors (see below), whose sum is σ = 1117297440. Its totient is φ = 926394480.

The previous prime is 1021611607. The next prime is 1021611629. The reversal of 1021611613 is 3161161201.

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

It is not a de Polignac number, because 1021611613 - 2⁵ = 1021611581 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 (1021611013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112603 + ... + 121336.

It is an arithmetic number, because the mean of its divisors is an integer number (139662180).

Almost surely, 2^1021611613 is an apocalyptic number.

It is an amenable number.

1021611613 is a deficient number, since it is larger than the sum of its proper divisors (95685827).

1021611613 is a wasteful number, since it uses less digits than its factorization.

1021611613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234347.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1021611613 is about 31962.6596671804. The cubic root of 1021611613 is about 1007.1525894892.

Adding to 1021611613 its reverse (3161161201), we get a palindrome (4182772814).

The spelling of 1021611613 in words is "one billion, twenty-one million, six hundred eleven thousand, six hundred thirteen".