2545117886 has 16 divisors (see below), whose sum is σ = 3919557600. Its totient is φ = 1238737920.

The previous prime is 2545117847. The next prime is 2545117903. The reversal of 2545117886 is 6887115452.

It is a self number, because there is not a number n which added to its sum of digits gives 2545117886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2255 + ... + 71381.

It is an arithmetic number, because the mean of its divisors is an integer number (244972350).

Almost surely, 2^2545117886 is an apocalyptic number.

2545117886 is a deficient number, since it is larger than the sum of its proper divisors (1374439714).

2545117886 is a wasteful number, since it uses less digits than its factorization.

2545117886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69619.

The product of its digits is 537600, while the sum is 47.

The square root of 2545117886 is about 50449.1614003642. The cubic root of 2545117886 is about 1365.3247646880.

The spelling of 2545117886 in words is "two billion, five hundred forty-five million, one hundred seventeen thousand, eight hundred eighty-six".