195477994 has 12 divisors (see below), whose sum is σ = 297672354. Its totient is φ = 96275784.

The previous prime is 195477973. The next prime is 195478001. The reversal of 195477994 is 499774591.

It can be written as a sum of positive squares in only one way, i.e., 188650225 + 6827769 = 13735^2 + 2613^2 .

It is a super-2 number, since 2×195477994² = 76423292276528072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1909 + ... + 19864.

Almost surely, 2^195477994 is an apocalyptic number.

195477994 is a deficient number, since it is larger than the sum of its proper divisors (102194360).

195477994 is an equidigital number, since it uses as much as digits as its factorization.

195477994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21909 (or 21842 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 55.

The square root of 195477994 is about 13981.3444990101. The cubic root of 195477994 is about 580.3624310271.

The spelling of 195477994 in words is "one hundred ninety-five million, four hundred seventy-seven thousand, nine hundred ninety-four".