1966747545 has 72 divisors (see below), whose sum is σ = 4058024256. Its totient is φ = 878133312.

The previous prime is 1966747537. The next prime is 1966747577. The reversal of 1966747545 is 5457476691.

1966747545 is a `hidden beast` number, since 1 + 96 + 6 + 7 + 4 + 7 + 545 = 666.

1966747545 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1966747545 - 2³ = 1966747537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1966747491 and 1966747500.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 84444 + ... + 105186.

It is an arithmetic number, because the mean of its divisors is an integer number (56361448).

Almost surely, 2^1966747545 is an apocalyptic number.

1966747545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1966747545 is an abundant number, since it is smaller than the sum of its proper divisors (2091276711).

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

1966747545 is a wasteful number, since it uses less digits than its factorization.

1966747545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20811 (or 20801 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 1966747545 is about 44348.0275209620. The cubic root of 1966747545 is about 1252.8994124594.

The spelling of 1966747545 in words is "one billion, nine hundred sixty-six million, seven hundred forty-seven thousand, five hundred forty-five".