189502739 has 2 divisors, whose sum is σ = 189502740. Its totient is φ = 189502738.

The previous prime is 189502717. The next prime is 189502769. The reversal of 189502739 is 937205981.

189502739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189502739 - 2¹⁶ = 189437203 is a prime.

It is a super-2 number, since 2×189502739² = 71822576177004242, which contains 22 as substring.

It is a Sophie Germain 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 189502739.

It is not a weakly prime, because it can be changed into another prime (189502769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94751369 + 94751370.

It is an arithmetic number, because the mean of its divisors is an integer number (94751370).

Almost surely, 2^189502739 is an apocalyptic number.

189502739 is a deficient number, since it is larger than the sum of its proper divisors (1).

189502739 is an equidigital number, since it uses as much as digits as its factorization.

189502739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 189502739 is about 13765.9993825367. Note that the first 3 decimals coincide. The cubic root of 189502739 is about 574.3877430103.

The spelling of 189502739 in words is "one hundred eighty-nine million, five hundred two thousand, seven hundred thirty-nine".