1968563083 has 4 divisors (see below), whose sum is σ = 1978869888. Its totient is φ = 1958256280.

The previous prime is 1968563081. The next prime is 1968563141. The reversal of 1968563083 is 3803658691.

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

It is a cyclic number.

It is not a de Polignac number, because 1968563083 - 2¹ = 1968563081 is a prime.

It is a super-2 number, since 2×1968563083² = 7750481223500929778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1968563081) 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, 5153116 + ... + 5153497.

It is an arithmetic number, because the mean of its divisors is an integer number (494717472).

Almost surely, 2^1968563083 is an apocalyptic number.

1968563083 is a deficient number, since it is larger than the sum of its proper divisors (10306805).

1968563083 is a wasteful number, since it uses less digits than its factorization.

1968563083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306804.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 1968563083 is about 44368.4920072792. The cubic root of 1968563083 is about 1253.2848181214.

The spelling of 1968563083 in words is "one billion, nine hundred sixty-eight million, five hundred sixty-three thousand, eighty-three".