1968537 has 8 divisors (see below), whose sum is σ = 2645280. Its totient is φ = 1302080.

The previous prime is 1968521. The next prime is 1968539. The reversal of 1968537 is 7358691.

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

It is a cyclic number.

It is not a de Polignac number, because 1968537 - 2⁴ = 1968521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1968495 and 1968504.

It is not an unprimeable number, because it can be changed into a prime (1968539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2112 + ... + 2897.

It is an arithmetic number, because the mean of its divisors is an integer number (330660).

2^1968537 is an apocalyptic number.

It is an amenable number.

1968537 is a deficient number, since it is larger than the sum of its proper divisors (676743).

1968537 is a wasteful number, since it uses less digits than its factorization.

1968537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143.

The product of its digits is 45360, while the sum is 39.

The square root of 1968537 is about 1403.0456157944. The cubic root of 1968537 is about 125.3279282853.

The spelling of 1968537 in words is "one million, nine hundred sixty-eight thousand, five hundred thirty-seven".