2261536616 has 16 divisors (see below), whose sum is σ = 4241170500. Its totient is φ = 1130557824.

The previous prime is 2261536603. The next prime is 2261536619. The reversal of 2261536616 is 6166351622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1649172100 + 612364516 = 40610^2 + 24746^2 .

It is a super-2 number, since 2×2261536616² = 10229095731017462912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2261536616.

It is not an unprimeable number, because it can be changed into a prime (2261536619) 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, 25310 + ... + 71858.

Almost surely, 2^2261536616 is an apocalyptic number.

It is an amenable number.

2261536616 is a deficient number, since it is larger than the sum of its proper divisors (1979633884).

2261536616 is a wasteful number, since it uses less digits than its factorization.

2261536616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52628 (or 52624 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 2261536616 is about 47555.6160300758. The cubic root of 2261536616 is about 1312.6064718585.

The spelling of 2261536616 in words is "two billion, two hundred sixty-one million, five hundred thirty-six thousand, six hundred sixteen".