194988465 has 80 divisors (see below), whose sum is σ = 403772160. Its totient is φ = 88179840.

The previous prime is 194988439. The next prime is 194988491. The reversal of 194988465 is 564889491.

194988465 is a `hidden beast` number, since 1 + 94 + 98 + 8 + 465 = 666.

It is an interprime number because it is at equal distance from previous prime (194988439) and next prime (194988491).

It is not a de Polignac number, because 194988465 - 2⁹ = 194987953 is a prime.

It is a super-3 number, since 3×194988465³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 308700 + ... + 309330.

It is an arithmetic number, because the mean of its divisors is an integer number (5047152).

Almost surely, 2^194988465 is an apocalyptic number.

194988465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194988465 is an abundant number, since it is smaller than the sum of its proper divisors (208783695).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194988465 is a wasteful number, since it uses less digits than its factorization.

194988465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 755 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 54.

The square root of 194988465 is about 13963.8270184072. The cubic root of 194988465 is about 579.8775653179.

The spelling of 194988465 in words is "one hundred ninety-four million, nine hundred eighty-eight thousand, four hundred sixty-five".