1968136 has 8 divisors (see below), whose sum is σ = 3690270. Its totient is φ = 984064.

The previous prime is 1968103. The next prime is 1968137. The reversal of 1968136 is 6318691.

It can be written as a sum of positive squares in only one way, i.e., 988036 + 980100 = 994^2 + 990^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1968137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123001 + ... + 123016.

2^1968136 is an apocalyptic number.

It is an amenable number.

1968136 is a deficient number, since it is larger than the sum of its proper divisors (1722134).

1968136 is a wasteful number, since it uses less digits than its factorization.

1968136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246023 (or 246019 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 1968136 is about 1402.9027051082. The cubic root of 1968136 is about 125.3194177498.

The spelling of 1968136 in words is "one million, nine hundred sixty-eight thousand, one hundred thirty-six".