1966308372 has 84 divisors (see below), whose sum is σ = 5896289056. Its totient is φ = 561796560.

The previous prime is 1966308359. The next prime is 1966308389. The reversal of 1966308372 is 2738036691.

1966308372 is a `hidden beast` number, since 1 + 9 + 6 + 630 + 8 + 3 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (84).

It is a super-2 number, since 2×1966308372² = 7732737227594580768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 27754 + ... + 68577.

Almost surely, 2^1966308372 is an apocalyptic number.

1966308372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1966308372 is an abundant number, since it is smaller than the sum of its proper divisors (3929980684).

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

1966308372 is an equidigital number, since it uses as much as digits as its factorization.

1966308372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96360 (or 96343 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 1966308372 is about 44343.0758067142. The cubic root of 1966308372 is about 1252.8061484042.

The spelling of 1966308372 in words is "one billion, nine hundred sixty-six million, three hundred eight thousand, three hundred seventy-two".