1966525854 has 16 divisors (see below), whose sum is σ = 3939027840. Its totient is φ = 654512600.

The previous prime is 1966525843. The next prime is 1966525861. The reversal of 1966525854 is 4585256691.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1966525797 and 1966525806.

It is a congruent number.

It is an unprimeable number.

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, 244722 + ... + 252629.

It is an arithmetic number, because the mean of its divisors is an integer number (246189240).

Almost surely, 2^1966525854 is an apocalyptic number.

1966525854 is an abundant number, since it is smaller than the sum of its proper divisors (1972501986).

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

1966525854 is a wasteful number, since it uses less digits than its factorization.

1966525854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498015.

The product of its digits is 2592000, while the sum is 51.

The square root of 1966525854 is about 44345.5280045237. The cubic root of 1966525854 is about 1252.8523352496.

The spelling of 1966525854 in words is "one billion, nine hundred sixty-six million, five hundred twenty-five thousand, eight hundred fifty-four".