189413970 has 64 divisors (see below), whose sum is σ = 476872704. Its totient is φ = 48058560.

The previous prime is 189413969. The next prime is 189413981. The reversal of 189413970 is 79314981.

It is a happy number.

It is a super-3 number, since 3×189413970³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 153255 + ... + 154485.

It is an arithmetic number, because the mean of its divisors is an integer number (7451136).

Almost surely, 2^189413970 is an apocalyptic number.

189413970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 189413970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238436352).

189413970 is an abundant number, since it is smaller than the sum of its proper divisors (287458734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189413970 is a wasteful number, since it uses less digits than its factorization.

189413970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 189413970 is about 13762.7747928970. The cubic root of 189413970 is about 574.2980419514.

The spelling of 189413970 in words is "one hundred eighty-nine million, four hundred thirteen thousand, nine hundred seventy".