2487784538 has 4 divisors (see below), whose sum is σ = 3731676810. Its totient is φ = 1243892268.

The previous prime is 2487784493. The next prime is 2487784583. The reversal of 2487784538 is 8354877842.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2487784493) and next prime (2487784583).

It can be written as a sum of positive squares in only one way, i.e., 1347844369 + 1139940169 = 36713^2 + 33763^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621946133 + ... + 621946136.

Almost surely, 2^2487784538 is an apocalyptic number.

2487784538 is a deficient number, since it is larger than the sum of its proper divisors (1243892272).

2487784538 is a wasteful number, since it uses less digits than its factorization.

2487784538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243892271.

The product of its digits is 12042240, while the sum is 56.

The square root of 2487784538 is about 49877.6957968188. The cubic root of 2487784538 is about 1354.9946737989.

The spelling of 2487784538 in words is "two billion, four hundred eighty-seven million, seven hundred eighty-four thousand, five hundred thirty-eight".