166075739 has 2 divisors, whose sum is σ = 166075740. Its totient is φ = 166075738.

The previous prime is 166075727. The next prime is 166075753. The reversal of 166075739 is 937570661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166075739 - 2¹⁶ = 166010203 is a prime.

It is a super-2 number, since 2×166075739² = 55162302168792242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166075739.

It is not a weakly prime, because it can be changed into another prime (166075759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83037869 + 83037870.

It is an arithmetic number, because the mean of its divisors is an integer number (83037870).

Almost surely, 2^166075739 is an apocalyptic number.

166075739 is a deficient number, since it is larger than the sum of its proper divisors (1).

166075739 is an equidigital number, since it uses as much as digits as its factorization.

166075739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 166075739 is about 12887.0376347708. The cubic root of 166075739 is about 549.6700378977.

The spelling of 166075739 in words is "one hundred sixty-six million, seventy-five thousand, seven hundred thirty-nine".