194889100 has 36 divisors (see below), whose sum is σ = 483326704. Its totient is φ = 66818880.

The previous prime is 194889091. The next prime is 194889103. The reversal of 194889100 is 1988491.

It is a super-2 number, since 2×194889100² = 75963522597620000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (194889103) 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, 138507 + ... + 139906.

Almost surely, 2^194889100 is an apocalyptic number.

194889100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194889100 is an abundant number, since it is smaller than the sum of its proper divisors (288437604).

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

194889100 is a wasteful number, since it uses less digits than its factorization.

194889100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278434 (or 278427 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 194889100 is about 13960.2686220574. The cubic root of 194889100 is about 579.7790478242.

The spelling of 194889100 in words is "one hundred ninety-four million, eight hundred eighty-nine thousand, one hundred".