1968242858 has 4 divisors (see below), whose sum is σ = 2952364290. Its totient is φ = 984121428.

The previous prime is 1968242831. The next prime is 1968242867. The reversal of 1968242858 is 8582428691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8582428691 = 179 ⋅47946529.

It can be written as a sum of positive squares in only one way, i.e., 1782275089 + 185967769 = 42217^2 + 13637^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492060713 + ... + 492060716.

Almost surely, 2^1968242858 is an apocalyptic number.

1968242858 is a deficient number, since it is larger than the sum of its proper divisors (984121432).

1968242858 is an equidigital number, since it uses as much as digits as its factorization.

1968242858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984121431.

The product of its digits is 2211840, while the sum is 53.

The square root of 1968242858 is about 44364.8831622489. The cubic root of 1968242858 is about 1253.2168574012.

The spelling of 1968242858 in words is "one billion, nine hundred sixty-eight million, two hundred forty-two thousand, eight hundred fifty-eight".