5408121818 has 8 divisors (see below), whose sum is σ = 8849653920. Its totient is φ = 2458237180.

The previous prime is 5408121703. The next prime is 5408121847. The reversal of 5408121818 is 8181218045.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122911838 + ... + 122911881.

It is an arithmetic number, because the mean of its divisors is an integer number (1106206740).

Almost surely, 2^5408121818 is an apocalyptic number.

5408121818 is a deficient number, since it is larger than the sum of its proper divisors (3441532102).

5408121818 is a wasteful number, since it uses less digits than its factorization.

5408121818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245823732.

The product of its (nonzero) digits is 20480, while the sum is 38.

The square root of 5408121818 is about 73539.9334919471. The cubic root of 5408121818 is about 1755.2897704715.

The spelling of 5408121818 in words is "five billion, four hundred eight million, one hundred twenty-one thousand, eight hundred eighteen".