189143396 has 24 divisors (see below), whose sum is σ = 357632184. Its totient is φ = 87010560.

The previous prime is 189143389. The next prime is 189143399. The reversal of 189143396 is 693341981.

It can be written as a sum of positive squares in 4 ways, for example, as 30030400 + 159112996 = 5480^2 + 12614^2 .

It is not an unprimeable number, because it can be changed into a prime (189143399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10466 + ... + 22086.

It is an arithmetic number, because the mean of its divisors is an integer number (14901341).

Almost surely, 2^189143396 is an apocalyptic number.

It is an amenable number.

189143396 is a deficient number, since it is larger than the sum of its proper divisors (168488788).

189143396 is a wasteful number, since it uses less digits than its factorization.

189143396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11951 (or 11949 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 189143396 is about 13752.9413581241. The cubic root of 189143396 is about 574.0244539514.

The spelling of 189143396 in words is "one hundred eighty-nine million, one hundred forty-three thousand, three hundred ninety-six".