194725988 has 6 divisors (see below), whose sum is σ = 340770486. Its totient is φ = 97362992.

The previous prime is 194725963. The next prime is 194726023. The reversal of 194725988 is 889527491.

It can be written as a sum of positive squares in only one way, i.e., 147088384 + 47637604 = 12128^2 + 6902^2 .

It is a super-2 number, since 2×194725988² = 75836420805152288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24340745 + ... + 24340752.

It is an arithmetic number, because the mean of its divisors is an integer number (56795081).

Almost surely, 2^194725988 is an apocalyptic number.

It is an amenable number.

194725988 is a deficient number, since it is larger than the sum of its proper divisors (146044498).

194725988 is a wasteful number, since it uses less digits than its factorization.

194725988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48681501 (or 48681499 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The square root of 194725988 is about 13954.4253912513. The cubic root of 194725988 is about 579.6172544156.

The spelling of 194725988 in words is "one hundred ninety-four million, seven hundred twenty-five thousand, nine hundred eighty-eight".