40619580849 has 9 divisors (see below), whose sum is σ = 58673601259. Its totient is φ = 27079317480.

The previous prime is 40619580823. The next prime is 40619580871. The reversal of 40619580849 is 94808591604.

The square root of 40619580849 is 201543.

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

40619580849 is a `hidden beast` number, since 4 + 0 + 6 + 19 + 580 + 8 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40378089249 + 241491600 = 200943^2 + 15540^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 40619580849 - 2¹¹ = 40619578801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40619580795 and 40619580804.

It is not an unprimeable number, because it can be changed into a prime (40619580899) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 571039 + ... + 638219.

Almost surely, 2^40619580849 is an apocalyptic number.

40619580849 is the 201543-rd square number.

40619580849 is the 100772-nd centered octagonal number.

It is an amenable number.

40619580849 is a deficient number, since it is larger than the sum of its proper divisors (18054020410).

40619580849 is an frugal number, since it uses more digits than its factorization.

40619580849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134368 (or 67184 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 40619580849 in words is "forty billion, six hundred nineteen million, five hundred eighty thousand, eight hundred forty-nine".