189711401 has 4 divisors (see below), whose sum is σ = 206957904. Its totient is φ = 172464900.

The previous prime is 189711397. The next prime is 189711407. The reversal of 189711401 is 104117981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104117981 = 11 ⋅9465271.

It is a cyclic number.

It is not a de Polignac number, because 189711401 - 2² = 189711397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189711407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8623235 + ... + 8623256.

It is an arithmetic number, because the mean of its divisors is an integer number (51739476).

Almost surely, 2^189711401 is an apocalyptic number.

189711401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

189711401 is a deficient number, since it is larger than the sum of its proper divisors (17246503).

189711401 is a wasteful number, since it uses less digits than its factorization.

189711401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17246502.

The product of its (nonzero) digits is 2016, while the sum is 32.

The square root of 189711401 is about 13773.5761877589. The cubic root of 189711401 is about 574.5984856670.

The spelling of 189711401 in words is "one hundred eighty-nine million, seven hundred eleven thousand, four hundred one".