618890099 has 8 divisors (see below), whose sum is σ = 634148592. Its totient is φ = 603671040.

The previous prime is 618890093. The next prime is 618890101. The reversal of 618890099 is 990098816.

618890099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618890099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618890093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23267 + ... + 42179.

It is an arithmetic number, because the mean of its divisors is an integer number (79268574).

Almost surely, 2^618890099 is an apocalyptic number.

618890099 is a deficient number, since it is larger than the sum of its proper divisors (15258493).

618890099 is a wasteful number, since it uses less digits than its factorization.

618890099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19717.

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 618890099 is about 24877.5018641342. The cubic root of 618890099 is about 852.1927692973.

The spelling of 618890099 in words is "six hundred eighteen million, eight hundred ninety thousand, ninety-nine".