618994498 has 4 divisors (see below), whose sum is σ = 928491750. Its totient is φ = 309497248.

The previous prime is 618994489. The next prime is 618994513. The reversal of 618994498 is 894499816.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 590830249 + 28164249 = 24307^2 + 5307^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154748623 + ... + 154748626.

Almost surely, 2^618994498 is an apocalyptic number.

618994498 is a deficient number, since it is larger than the sum of its proper divisors (309497252).

618994498 is a wasteful number, since it uses less digits than its factorization.

618994498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309497251.

The product of its digits is 4478976, while the sum is 58.

The square root of 618994498 is about 24879.6000369781. The cubic root of 618994498 is about 852.2406846816.

The spelling of 618994498 in words is "six hundred eighteen million, nine hundred ninety-four thousand, four hundred ninety-eight".