194145837 has 16 divisors (see below), whose sum is σ = 264306240. Its totient is φ = 126718592.

The previous prime is 194145827. The next prime is 194145863. The reversal of 194145837 is 738541491.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 194145837 - 2⁴ = 194145821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194145827) 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, 97114 + ... + 99092.

It is an arithmetic number, because the mean of its divisors is an integer number (16519140).

Almost surely, 2^194145837 is an apocalyptic number.

It is an amenable number.

194145837 is a deficient number, since it is larger than the sum of its proper divisors (70160403).

194145837 is a wasteful number, since it uses less digits than its factorization.

194145837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2652.

The product of its digits is 120960, while the sum is 42.

The square root of 194145837 is about 13933.6225368710. The cubic root of 194145837 is about 579.0410600846.

The spelling of 194145837 in words is "one hundred ninety-four million, one hundred forty-five thousand, eight hundred thirty-seven".