298241901778 has 4 divisors (see below), whose sum is σ = 447362852670. Its totient is φ = 149120950888.

The previous prime is 298241901773. The next prime is 298241901799. The reversal of 298241901778 is 877109142892.

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., 153509590809 + 144732310969 = 391803^2 + 380437^2 .

It is a super-2 number, since 2×298241901778² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (298241901773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74560475443 + ... + 74560475446.

Almost surely, 2^298241901778 is an apocalyptic number.

298241901778 is a deficient number, since it is larger than the sum of its proper divisors (149120950892).

298241901778 is a wasteful number, since it uses less digits than its factorization.

298241901778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149120950891.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The spelling of 298241901778 in words is "two hundred ninety-eight billion, two hundred forty-one million, nine hundred one thousand, seven hundred seventy-eight".