1802596849 has 3 divisors (see below), whose sum is σ = 1802639307. Its totient is φ = 1802554392.

The previous prime is 1802596847. The next prime is 1802596891. The reversal of 1802596849 is 9486952081.

The square root of 1802596849 is 42457.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9486952081 = 2579 ⋅3678539.

It can be written as a sum of positive squares in only one way, i.e., 1662600625 + 139996224 = 40775^2 + 11832^2 .

It is not a de Polignac number, because 1802596849 - 2¹ = 1802596847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1802596796 and 1802596805.

It is not an unprimeable number, because it can be changed into a prime (1802596847) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 21229 + ... + 63685.

It is an arithmetic number, because the mean of its divisors is an integer number (600879769).

Almost surely, 2^1802596849 is an apocalyptic number.

1802596849 is the 42457-th square number.

1802596849 is the 21229-th centered octagonal number.

It is an amenable number.

1802596849 is a deficient number, since it is larger than the sum of its proper divisors (42458).

1802596849 is an frugal number, since it uses more digits than its factorization.

1802596849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84914 (or 42457 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 52.

The cubic root of 1802596849 is about 1217.0251017325.

The spelling of 1802596849 in words is "one billion, eight hundred two million, five hundred ninety-six thousand, eight hundred forty-nine".