189427061 has 4 divisors (see below), whose sum is σ = 193457472. Its totient is φ = 185396652.

The previous prime is 189427033. The next prime is 189427099. The reversal of 189427061 is 160724981.

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: 160724981 = 641 ⋅250741.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189427061 is a prime.

It is a super-2 number, since 2×189427061² = 71765222878195442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189427661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2015135 + ... + 2015228.

It is an arithmetic number, because the mean of its divisors is an integer number (48364368).

Almost surely, 2^189427061 is an apocalyptic number.

It is an amenable number.

189427061 is a deficient number, since it is larger than the sum of its proper divisors (4030411).

189427061 is an equidigital number, since it uses as much as digits as its factorization.

189427061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030410.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 189427061 is about 13763.2503791801. The cubic root of 189427061 is about 574.3112721661.

The spelling of 189427061 in words is "one hundred eighty-nine million, four hundred twenty-seven thousand, sixty-one".