192989478 has 32 divisors (see below), whose sum is σ = 421863552. Its totient is φ = 58371200.

The previous prime is 192989471. The next prime is 192989497. The reversal of 192989478 is 874989291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (192989471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36673 + ... + 41603.

It is an arithmetic number, because the mean of its divisors is an integer number (13183236).

Almost surely, 2^192989478 is an apocalyptic number.

192989478 is an abundant number, since it is smaller than the sum of its proper divisors (228874074).

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

192989478 is a wasteful number, since it uses less digits than its factorization.

192989478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540.

The product of its digits is 2612736, while the sum is 57.

The square root of 192989478 is about 13892.0652892218. The cubic root of 192989478 is about 577.8891543206.

The spelling of 192989478 in words is "one hundred ninety-two million, nine hundred eighty-nine thousand, four hundred seventy-eight".