166156763 has 2 divisors, whose sum is σ = 166156764. Its totient is φ = 166156762.

The previous prime is 166156721. The next prime is 166156777. The reversal of 166156763 is 367651661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166156763 - 2⁶ = 166156699 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166156763.

It is not a weakly prime, because it can be changed into another prime (166156663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83078381 + 83078382.

It is an arithmetic number, because the mean of its divisors is an integer number (83078382).

Almost surely, 2^166156763 is an apocalyptic number.

166156763 is a deficient number, since it is larger than the sum of its proper divisors (1).

166156763 is an equidigital number, since it uses as much as digits as its factorization.

166156763 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The square root of 166156763 is about 12890.1808753795. The cubic root of 166156763 is about 549.7594132327.

The spelling of 166156763 in words is "one hundred sixty-six million, one hundred fifty-six thousand, seven hundred sixty-three".