618368890 has 8 divisors (see below), whose sum is σ = 1113064020. Its totient is φ = 247347552.

The previous prime is 618368887. The next prime is 618368893. The reversal of 618368890 is 98863816.

It is an interprime number because it is at equal distance from previous prime (618368887) and next prime (618368893).

It can be written as a sum of positive squares in 2 ways, for example, as 532824889 + 85544001 = 23083^2 + 9249^2 .

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

It is not an unprimeable number, because it can be changed into a prime (618368893) 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, 30918435 + ... + 30918454.

Almost surely, 2^618368890 is an apocalyptic number.

618368890 is a deficient number, since it is larger than the sum of its proper divisors (494695130).

618368890 is a wasteful number, since it uses less digits than its factorization.

618368890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61836896.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 618368890 is about 24867.0241484581. The cubic root of 618368890 is about 851.9534724825.

The spelling of 618368890 in words is "six hundred eighteen million, three hundred sixty-eight thousand, eight hundred ninety".