1845910801449 has 81 divisors (see below), whose sum is σ = 3174529466199. Its totient is φ = 1032351297120.

The previous prime is 1845910801447. The next prime is 1845910801481. The reversal of 1845910801449 is 9441080195481.

The square root of 1845910801449 is 1358643.

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

1845910801449 is a `hidden beast` number, since 1 + 8 + 4 + 591 + 0 + 8 + 0 + 1 + 4 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 273063728025 + 1572847073424 = 522555^2 + 1254132^2 .

It is not a de Polignac number, because 1845910801449 - 2¹ = 1845910801447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1845910801395 and 1845910801404.

It is not an unprimeable number, because it can be changed into a prime (1845910801447) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 582856264 + ... + 582859430.

Almost surely, 2^{1845910801449} is an apocalyptic number.

1845910801449 is the 1358643-rd square number.

1845910801449 is the 679322-nd centered octagonal number.

It is an amenable number.

1845910801449 is a deficient number, since it is larger than the sum of its proper divisors (1328618664750).

1845910801449 is an equidigital number, since it uses as much as digits as its factorization.

1845910801449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388 (or 3194 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 1845910801449 in words is "one trillion, eight hundred forty-five billion, nine hundred ten million, eight hundred one thousand, four hundred forty-nine".