189733913 has 2 divisors, whose sum is σ = 189733914. Its totient is φ = 189733912.

The previous prime is 189733879. The next prime is 189733949. The reversal of 189733913 is 319337981.

189733913 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 can be written as a sum of positive squares in only one way, i.e., 189255049 + 478864 = 13757^2 + 692^2 .

It is a cyclic number.

It is not a de Polignac number, because 189733913 - 2⁸ = 189733657 is a prime.

It is not a weakly prime, because it can be changed into another prime (189733013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94866956 + 94866957.

It is an arithmetic number, because the mean of its divisors is an integer number (94866957).

Almost surely, 2^189733913 is an apocalyptic number.

It is an amenable number.

189733913 is a deficient number, since it is larger than the sum of its proper divisors (1).

189733913 is an equidigital number, since it uses as much as digits as its factorization.

189733913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 189733913 is about 13774.3933804723. The cubic root of 189733913 is about 574.6212129068.

The spelling of 189733913 in words is "one hundred eighty-nine million, seven hundred thirty-three thousand, nine hundred thirteen".