168491358298 has 4 divisors (see below), whose sum is σ = 252737037450. Its totient is φ = 84245679148.

The previous prime is 168491358257. The next prime is 168491358391. The reversal of 168491358298 is 892853194861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 892853194861 = 9133 ⋅97761217.

It can be written as a sum of positive squares in only one way, i.e., 104184991729 + 64306366569 = 322777^2 + 253587^2 .

It is a super-2 number, since 2×168491358298² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42122839573 + ... + 42122839576.

Almost surely, 2^168491358298 is an apocalyptic number.

168491358298 is a deficient number, since it is larger than the sum of its proper divisors (84245679152).

168491358298 is an equidigital number, since it uses as much as digits as its factorization.

168491358298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84245679151.

The product of its digits is 29859840, while the sum is 64.

The spelling of 168491358298 in words is "one hundred sixty-eight billion, four hundred ninety-one million, three hundred fifty-eight thousand, two hundred ninety-eight".