1968476537 has 2 divisors, whose sum is σ = 1968476538. Its totient is φ = 1968476536.

The previous prime is 1968476441. The next prime is 1968476579. The reversal of 1968476537 is 7356748691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1959301696 + 9174841 = 44264^2 + 3029^2 .

It is a cyclic number.

It is not a de Polignac number, because 1968476537 - 2¹⁰ = 1968475513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1968479537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984238268 + 984238269.

It is an arithmetic number, because the mean of its divisors is an integer number (984238269).

Almost surely, 2^1968476537 is an apocalyptic number.

It is an amenable number.

1968476537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1968476537 is an equidigital number, since it uses as much as digits as its factorization.

1968476537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 1968476537 is about 44367.5166873243. The cubic root of 1968476537 is about 1253.2664513613.

The spelling of 1968476537 in words is "one billion, nine hundred sixty-eight million, four hundred seventy-six thousand, five hundred thirty-seven".