194940538 has 16 divisors (see below), whose sum is σ = 315481320. Its totient is φ = 89807616.

The previous prime is 194940467. The next prime is 194940541. The reversal of 194940538 is 835049491.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 114425809 + 80514729 = 10697^2 + 8973^2 .

It is a junction number, because it is equal to n+sod(n) for n = 194940494 and 194940503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8206 + ... + 21382.

Almost surely, 2^194940538 is an apocalyptic number.

194940538 is a deficient number, since it is larger than the sum of its proper divisors (120540782).

194940538 is a wasteful number, since it uses less digits than its factorization.

194940538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13761.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 194940538 is about 13962.1108003052. The cubic root of 194940538 is about 579.8300512775.

The spelling of 194940538 in words is "one hundred ninety-four million, nine hundred forty thousand, five hundred thirty-eight".