189982963 has 2 divisors, whose sum is σ = 189982964. Its totient is φ = 189982962.

The previous prime is 189982907. The next prime is 189982981. The reversal of 189982963 is 369289981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189982963 - 2¹⁷ = 189851891 is a prime.

It is not a weakly prime, because it can be changed into another prime (189982993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94991481 + 94991482.

It is an arithmetic number, because the mean of its divisors is an integer number (94991482).

Almost surely, 2^189982963 is an apocalyptic number.

189982963 is a deficient number, since it is larger than the sum of its proper divisors (1).

189982963 is an equidigital number, since it uses as much as digits as its factorization.

189982963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 55.

The square root of 189982963 is about 13783.4307412922. The cubic root of 189982963 is about 574.8725242301.

The spelling of 189982963 in words is "one hundred eighty-nine million, nine hundred eighty-two thousand, nine hundred sixty-three".