194942385 has 48 divisors (see below), whose sum is σ = 369982080. Its totient is φ = 94168320.

The previous prime is 194942311. The next prime is 194942389. The reversal of 194942385 is 583249491.

194942385 is a nontrivial binomial coefficient, being equal to C(19746, 2).

It is not a de Polignac number, because 194942385 - 2¹¹ = 194940337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 194942385.

It is not an unprimeable number, because it can be changed into a prime (194942389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177157 + ... + 178253.

It is an arithmetic number, because the mean of its divisors is an integer number (7707960).

Almost surely, 2^194942385 is an apocalyptic number.

194942385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

194942385 is the 19745-th triangular number and also the 9873-rd hexagonal number.

It is an amenable number.

194942385 is a deficient number, since it is larger than the sum of its proper divisors (175039695).

194942385 is a wasteful number, since it uses less digits than its factorization.

194942385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478 (or 1475 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 194942385 is about 13962.1769434426. The cubic root of 194942385 is about 579.8318825072.

The spelling of 194942385 in words is "one hundred ninety-four million, nine hundred forty-two thousand, three hundred eighty-five".