3561538436 has 12 divisors (see below), whose sum is σ = 6334867980. Its totient is φ = 1751576160.

The previous prime is 3561538433. The next prime is 3561538439. The reversal of 3561538436 is 6348351653.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3561538433) and next prime (3561538439).

It can be written as a sum of positive squares in 2 ways, for example, as 31990336 + 3529548100 = 5656^2 + 59410^2 .

It is a super-2 number, since 2×3561538436² = 25369112062210652192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3561538433) 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, 7297991 + ... + 7298478.

It is an arithmetic number, because the mean of its divisors is an integer number (527905665).

Almost surely, 2^3561538436 is an apocalyptic number.

It is an amenable number.

3561538436 is a deficient number, since it is larger than the sum of its proper divisors (2773329544).

3561538436 is a wasteful number, since it uses less digits than its factorization.

3561538436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14596534 (or 14596532 counting only the distinct ones).

The product of its digits is 777600, while the sum is 44.

The square root of 3561538436 is about 59678.6262911606. The cubic root of 3561538436 is about 1527.1412630688.

The spelling of 3561538436 in words is "three billion, five hundred sixty-one million, five hundred thirty-eight thousand, four hundred thirty-six".