194439988542276 has 81 divisors (see below), whose sum is σ = 498960793963359. Its totient is φ = 63844125756048.

The previous prime is 194439988542197. The next prime is 194439988542341. The reversal of 194439988542276 is 672245889934491.

The square root of 194439988542276 is 13944174.

It is a perfect power (a square), and thus also a powerful number.

194439988542276 is a `hidden beast` number, since 1 + 9 + 4 + 4 + 39 + 98 + 8 + 5 + 422 + 76 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 194439988542195 and 194439988542204.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5605540605 + ... + 5605575291.

Almost surely, 2^{194439988542276} is an apocalyptic number.

194439988542276 is the 13944174-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194439988542276

194439988542276 is an abundant number, since it is smaller than the sum of its proper divisors (304520805421083).

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

194439988542276 is an frugal number, since it uses more digits than its factorization.

194439988542276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69518 (or 34759 counting only the distinct ones).

The product of its digits is 7524679680, while the sum is 81.

The spelling of 194439988542276 in words is "one hundred ninety-four trillion, four hundred thirty-nine billion, nine hundred eighty-eight million, five hundred forty-two thousand, two hundred seventy-six".