5461587638 has 32 divisors (see below), whose sum is σ = 9180864000. Its totient is φ = 2420351136.

The previous prime is 5461587631. The next prime is 5461587641. The reversal of 5461587638 is 8367851645.

It is a self number, because there is not a number n which added to its sum of digits gives 5461587638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5461587631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24563 + ... + 107361.

It is an arithmetic number, because the mean of its divisors is an integer number (286902000).

Almost surely, 2^5461587638 is an apocalyptic number.

5461587638 is a deficient number, since it is larger than the sum of its proper divisors (3719276362).

5461587638 is a wasteful number, since it uses less digits than its factorization.

5461587638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82916.

The product of its digits is 4838400, while the sum is 53.

The square root of 5461587638 is about 73902.5550167246. Note that the first 3 decimals coincide. The cubic root of 5461587638 is about 1761.0551994910.

The spelling of 5461587638 in words is "five billion, four hundred sixty-one million, five hundred eighty-seven thousand, six hundred thirty-eight".