1968177774 has 32 divisors (see below), whose sum is σ = 3962144160. Its totient is φ = 651776000.

The previous prime is 1968177769. The next prime is 1968177779. The reversal of 1968177774 is 4777718691.

It is an interprime number because it is at equal distance from previous prime (1968177769) and next prime (1968177779).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968177779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645694 + ... + 648734.

It is an arithmetic number, because the mean of its divisors is an integer number (123817005).

Almost surely, 2^1968177774 is an apocalyptic number.

1968177774 is an abundant number, since it is smaller than the sum of its proper divisors (1993966386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1968177774 is a wasteful number, since it uses less digits than its factorization.

1968177774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716.

The product of its digits is 4148928, while the sum is 57.

The square root of 1968177774 is about 44364.1496481111. The cubic root of 1968177774 is about 1253.2030438509.

The spelling of 1968177774 in words is "one billion, nine hundred sixty-eight million, one hundred seventy-seven thousand, seven hundred seventy-four".