941565537649 has 27 divisors (see below), whose sum is σ = 1099616027041. Its totient is φ = 805462317440.

The previous prime is 941565537631. The next prime is 941565537701. The reversal of 941565537649 is 946735565149.

The square root of 941565537649 is 970343.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 304014390625 + 637551147024 = 551375^2 + 798468^2 .

It is not a de Polignac number, because 941565537649 - 2²⁹ = 941028666737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (941565537349) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 181451547 + ... + 181456735.

Almost surely, 2^941565537649 is an apocalyptic number.

941565537649 is the 970343-rd square number.

941565537649 is the 485172-nd centered octagonal number.

It is an amenable number.

941565537649 is a deficient number, since it is larger than the sum of its proper divisors (158050489392).

941565537649 is an frugal number, since it uses more digits than its factorization.

941565537649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10434 (or 5217 counting only the distinct ones).

The product of its digits is 122472000, while the sum is 64.

Multiplying 941565537649 by its sum of digits (64), we get a square (60260194409536 = 7762744²).

The spelling of 941565537649 in words is "nine hundred forty-one billion, five hundred sixty-five million, five hundred thirty-seven thousand, six hundred forty-nine".