1618589241 has 6 divisors (see below), whose sum is σ = 2337962250. Its totient is φ = 1079059488.

The previous prime is 1618589221. The next prime is 1618589257. The reversal of 1618589241 is 1429858161.

It is a happy number.

1618589241 is a `hidden beast` number, since 1 + 61 + 8 + 589 + 2 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1362717225 + 255872016 = 36915^2 + 15996^2 .

It is not a de Polignac number, because 1618589241 - 2⁶ = 1618589177 is a prime.

It is a super-2 number, since 2×1618589241² = 5239662262161912162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1618589221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89921616 + ... + 89921633.

It is an arithmetic number, because the mean of its divisors is an integer number (389660375).

Almost surely, 2^1618589241 is an apocalyptic number.

It is an amenable number.

1618589241 is a deficient number, since it is larger than the sum of its proper divisors (719373009).

1618589241 is a wasteful number, since it uses less digits than its factorization.

1618589241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179843255 (or 179843252 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1618589241 is about 40231.6944833299. The cubic root of 1618589241 is about 1174.1192714414.

The spelling of 1618589241 in words is "one billion, six hundred eighteen million, five hundred eighty-nine thousand, two hundred forty-one".