2052878587369 has 9 divisors (see below), whose sum is σ = 2074400903991. Its totient is φ = 2031577343040.

The previous prime is 2052878587351. The next prime is 2052878587387. The reversal of 2052878587369 is 9637858782502.

The square root of 2052878587369 is 1432787.

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

It is an interprime number because it is at equal distance from previous prime (2052878587351) and next prime (2052878587387).

It can be written as a sum of positive squares in only one way, i.e., 921820813225 + 1131057774144 = 960115^2 + 1063512^2 .

It is not a de Polignac number, because 2052878587369 - 2¹¹ = 2052878585321 is a prime.

It is a super-2 number, since 2×2052878587369² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2052878587298 and 2052878587307.

It is not an unprimeable number, because it can be changed into a prime (2052878587339) 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, 138972954 + ... + 138987724.

Almost surely, 2^{2052878587369} is an apocalyptic number.

2052878587369 is the 1432787-th square number.

2052878587369 is the 716394-th centered octagonal number.

It is an amenable number.

2052878587369 is a deficient number, since it is larger than the sum of its proper divisors (21522316622).

2052878587369 is an frugal number, since it uses more digits than its factorization.

2052878587369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29736 (or 14868 counting only the distinct ones).

The product of its (nonzero) digits is 406425600, while the sum is 70.

The spelling of 2052878587369 in words is "two trillion, fifty-two billion, eight hundred seventy-eight million, five hundred eighty-seven thousand, three hundred sixty-nine".