194761145 has 4 divisors (see below), whose sum is σ = 233713380. Its totient is φ = 155808912.

The previous prime is 194761139. The next prime is 194761181. The reversal of 194761145 is 541167491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 139169209 + 55591936 = 11797^2 + 7456^2 .

It is a cyclic number.

It is not a de Polignac number, because 194761145 - 2¹⁴ = 194744761 is a prime.

It is a super-2 number, since 2×194761145² = 75863807203422050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 194761099 and 194761108.

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 3 ways as a sum of consecutive naturals, for example, 19476110 + ... + 19476119.

It is an arithmetic number, because the mean of its divisors is an integer number (58428345).

Almost surely, 2^194761145 is an apocalyptic number.

It is an amenable number.

194761145 is a deficient number, since it is larger than the sum of its proper divisors (38952235).

194761145 is an equidigital number, since it uses as much as digits as its factorization.

194761145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38952234.

The product of its digits is 30240, while the sum is 38.

The square root of 194761145 is about 13955.6850423044. The cubic root of 194761145 is about 579.6521348438.

The spelling of 194761145 in words is "one hundred ninety-four million, seven hundred sixty-one thousand, one hundred forty-five".