194043745 has 16 divisors (see below), whose sum is σ = 270482688. Its totient is φ = 130875840.

The previous prime is 194043739. The next prime is 194043749. The reversal of 194043745 is 547340491.

It is not a de Polignac number, because 194043745 - 2⁹ = 194043233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194043749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43309 + ... + 47578.

It is an arithmetic number, because the mean of its divisors is an integer number (16905168).

Almost surely, 2^194043745 is an apocalyptic number.

It is an amenable number.

194043745 is a deficient number, since it is larger than the sum of its proper divisors (76438943).

194043745 is an equidigital number, since it uses as much as digits as its factorization.

194043745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90960.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 194043745 is about 13929.9585426519. The cubic root of 194043745 is about 578.9395456323.

The spelling of 194043745 in words is "one hundred ninety-four million, forty-three thousand, seven hundred forty-five".