5155306638 has 8 divisors (see below), whose sum is σ = 10310613288. Its totient is φ = 1718435544.

The previous prime is 5155306633. The next prime is 5155306657. The reversal of 5155306638 is 8366035515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

5155306638 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 5155306638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155306631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429608881 + ... + 429608892.

It is an arithmetic number, because the mean of its divisors is an integer number (1288826661).

Almost surely, 2^5155306638 is an apocalyptic number.

5155306638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5155306638 is a wasteful number, since it uses less digits than its factorization.

5155306638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859217778.

The product of its (nonzero) digits is 324000, while the sum is 42.

The square root of 5155306638 is about 71800.4640514252. The cubic root of 5155306638 is about 1727.5004430053.

The spelling of 5155306638 in words is "five billion, one hundred fifty-five million, three hundred six thousand, six hundred thirty-eight".