1966600537 has 12 divisors (see below), whose sum is σ = 2231369728. Its totient is φ = 1730143800.

The previous prime is 1966600523. The next prime is 1966600541. The reversal of 1966600537 is 7350066691.

It is not a de Polignac number, because 1966600537 - 2¹⁹ = 1966076249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1966600493 and 1966600502.

It is not an unprimeable number, because it can be changed into a prime (1966600637) 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 11 ways as a sum of consecutive naturals, for example, 258393 + ... + 265894.

Almost surely, 2^1966600537 is an apocalyptic number.

It is an amenable number.

1966600537 is a deficient number, since it is larger than the sum of its proper divisors (264769191).

1966600537 is a wasteful number, since it uses less digits than its factorization.

1966600537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524340 (or 524329 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 1966600537 is about 44346.3700543799. The cubic root of 1966600537 is about 1252.8681949591.

The spelling of 1966600537 in words is "one billion, nine hundred sixty-six million, six hundred thousand, five hundred thirty-seven".