194780465 has 16 divisors (see below), whose sum is σ = 256144896. Its totient is φ = 141014400.

The previous prime is 194780431. The next prime is 194780483. The reversal of 194780465 is 564087491.

194780465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-194780465 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4325 + ... + 20205.

It is an arithmetic number, because the mean of its divisors is an integer number (16009056).

Almost surely, 2^194780465 is an apocalyptic number.

It is an amenable number.

194780465 is a deficient number, since it is larger than the sum of its proper divisors (61364431).

194780465 is a wasteful number, since it uses less digits than its factorization.

194780465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16120.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 194780465 is about 13956.3772161690. The cubic root of 194780465 is about 579.6713010709.

The spelling of 194780465 in words is "one hundred ninety-four million, seven hundred eighty thousand, four hundred sixty-five".