189457970 has 32 divisors (see below), whose sum is σ = 369759600. Its totient is φ = 69477120.

The previous prime is 189457967. The next prime is 189457981. The reversal of 189457970 is 79754981.

189457970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13126129 + 176331841 = 3623^2 + 13279^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14480 + ... + 24260.

Almost surely, 2^189457970 is an apocalyptic number.

189457970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189457970 is a deficient number, since it is larger than the sum of its proper divisors (180301630).

189457970 is a wasteful number, since it uses less digits than its factorization.

189457970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9950.

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 189457970 is about 13764.3732149343. The cubic root of 189457970 is about 574.3425074458.

The spelling of 189457970 in words is "one hundred eighty-nine million, four hundred fifty-seven thousand, nine hundred seventy".