189451234 has 24 divisors (see below), whose sum is σ = 327741120. Its totient is φ = 80458056.

The previous prime is 189451231. The next prime is 189451267. The reversal of 189451234 is 432154981.

It is a junction number, because it is equal to n+sod(n) for n = 189451193 and 189451202.

It is not an unprimeable number, because it can be changed into a prime (189451231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225387 + ... + 226225.

It is an arithmetic number, because the mean of its divisors is an integer number (13655880).

Almost surely, 2^189451234 is an apocalyptic number.

189451234 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

189451234 is a deficient number, since it is larger than the sum of its proper divisors (138289886).

189451234 is an equidigital number, since it uses as much as digits as its factorization.

189451234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102 (or 975 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 189451234 is about 13764.1285230849. The cubic root of 189451234 is about 574.3357006292.

The spelling of 189451234 in words is "one hundred eighty-nine million, four hundred fifty-one thousand, two hundred thirty-four".