1615160661 has 8 divisors (see below), whose sum is σ = 2179494240. Its totient is φ = 1063800432.

The previous prime is 1615160647. The next prime is 1615160681. The reversal of 1615160661 is 1660615161.

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

It is not a de Polignac number, because 1615160661 - 2¹¹ = 1615158613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1615160621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3243046 + ... + 3243543.

It is an arithmetic number, because the mean of its divisors is an integer number (272436780).

Almost surely, 2^1615160661 is an apocalyptic number.

It is an amenable number.

1615160661 is a deficient number, since it is larger than the sum of its proper divisors (564333579).

1615160661 is an equidigital number, since it uses as much as digits as its factorization.

1615160661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486675.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1615160661 is about 40189.0614595564. The cubic root of 1615160661 is about 1173.2896585324.

The spelling of 1615160661 in words is "one billion, six hundred fifteen million, one hundred sixty thousand, six hundred sixty-one".