194011920 has 60 divisors (see below), whose sum is σ = 651559116. Its totient is φ = 51736320.

The previous prime is 194011861. The next prime is 194011927. The reversal of 194011920 is 29110491.

It can be written as a sum of positive squares in 2 ways, for example, as 152176896 + 41835024 = 12336^2 + 6468^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194011927) 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, 134011 + ... + 135450.

Almost surely, 2^194011920 is an apocalyptic number.

194011920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194011920 is an abundant number, since it is smaller than the sum of its proper divisors (457547196).

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

194011920 is a wasteful number, since it uses less digits than its factorization.

194011920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269480 (or 269471 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 194011920 is about 13928.8161736739. The cubic root of 194011920 is about 578.9078933908.

It can be divided in two parts, 19401 and 1920, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 194011920 in words is "one hundred ninety-four million, eleven thousand, nine hundred twenty".