1968690527 has 4 divisors (see below), whose sum is σ = 1968987216. Its totient is φ = 1968393840.

The previous prime is 1968690473. The next prime is 1968690533. The reversal of 1968690527 is 7250968691.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1968690527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968690127) 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, 138158 + ... + 151739.

It is an arithmetic number, because the mean of its divisors is an integer number (492246804).

Almost surely, 2^1968690527 is an apocalyptic number.

1968690527 is a deficient number, since it is larger than the sum of its proper divisors (296689).

1968690527 is an equidigital number, since it uses as much as digits as its factorization.

1968690527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296688.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 1968690527 is about 44369.9281833992. The cubic root of 1968690527 is about 1253.3118632599.

The spelling of 1968690527 in words is "one billion, nine hundred sixty-eight million, six hundred ninety thousand, five hundred twenty-seven".