1966714478 has 16 divisors (see below), whose sum is σ = 3020202240. Its totient is φ = 960003576.

The previous prime is 1966714471. The next prime is 1966714487. The reversal of 1966714478 is 8744176691.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966714471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213851 + ... + 222857.

It is an arithmetic number, because the mean of its divisors is an integer number (188762640).

Almost surely, 2^1966714478 is an apocalyptic number.

1966714478 is a deficient number, since it is larger than the sum of its proper divisors (1053487762).

1966714478 is a wasteful number, since it uses less digits than its factorization.

1966714478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11591.

The product of its digits is 2032128, while the sum is 53.

The square root of 1966714478 is about 44347.6547068726. The cubic root of 1966714478 is about 1252.8923907385.

The spelling of 1966714478 in words is "one billion, nine hundred sixty-six million, seven hundred fourteen thousand, four hundred seventy-eight".