1966132947 has 8 divisors (see below), whose sum is σ = 2622084544. Its totient is φ = 1310468328.

The previous prime is 1966132919. The next prime is 1966132951. The reversal of 1966132947 is 7492316691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1966132947 - 2¹⁵ = 1966100179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1966132896 and 1966132905.

It is not an unprimeable number, because it can be changed into a prime (1966132547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55213 + ... + 83550.

It is an arithmetic number, because the mean of its divisors is an integer number (327760568).

Almost surely, 2^1966132947 is an apocalyptic number.

1966132947 is a deficient number, since it is larger than the sum of its proper divisors (655951597).

1966132947 is a wasteful number, since it uses less digits than its factorization.

1966132947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143489.

The product of its digits is 489888, while the sum is 48.

The square root of 1966132947 is about 44341.0977198355. The cubic root of 1966132947 is about 1252.7688907598.

The spelling of 1966132947 in words is "one billion, nine hundred sixty-six million, one hundred thirty-two thousand, nine hundred forty-seven".