2865508545 has 16 divisors (see below), whose sum is σ = 4585545792. Its totient is φ = 1528027200.

The previous prime is 2865508543. The next prime is 2865508609. The reversal of 2865508545 is 5458055682.

It is not a de Polignac number, because 2865508545 - 2¹ = 2865508543 is a prime.

It is a super-2 number, since 2×2865508545² = 16422278442936034050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2865508494 and 2865508503.

It is not an unprimeable number, because it can be changed into a prime (2865508543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121195 + ... + 142895.

It is an arithmetic number, because the mean of its divisors is an integer number (286596612).

Almost surely, 2^2865508545 is an apocalyptic number.

It is an amenable number.

2865508545 is a deficient number, since it is larger than the sum of its proper divisors (1720037247).

2865508545 is a wasteful number, since it uses less digits than its factorization.

2865508545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30512.

The product of its (nonzero) digits is 1920000, while the sum is 48.

The square root of 2865508545 is about 53530.4450289739. The cubic root of 2865508545 is about 1420.3669859187.

The spelling of 2865508545 in words is "two billion, eight hundred sixty-five million, five hundred eight thousand, five hundred forty-five".