1966324815 has 80 divisors (see below), whose sum is σ = 4338320448. Its totient is φ = 829730304.

The previous prime is 1966324807. The next prime is 1966324819. The reversal of 1966324815 is 5184236691.

1966324815 is a `hidden beast` number, since 1 + 9 + 6 + 632 + 4 + 8 + 1 + 5 = 666.

It is not a de Polignac number, because 1966324815 - 2³ = 1966324807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966324819) 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 79 ways as a sum of consecutive naturals, for example, 10179 + ... + 63531.

Almost surely, 2^1966324815 is an apocalyptic number.

1966324815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1966324815 is an abundant number, since it is smaller than the sum of its proper divisors (2371995633).

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

1966324815 is a wasteful number, since it uses less digits than its factorization.

1966324815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53390 (or 53381 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1966324815 is about 44343.2612129509. The cubic root of 1966324815 is about 1252.8096405377.

The spelling of 1966324815 in words is "one billion, nine hundred sixty-six million, three hundred twenty-four thousand, eight hundred fifteen".