193739064964 has 27 divisors (see below), whose sum is σ = 342590688741. Its totient is φ = 95866412400.

The previous prime is 193739064949. The next prime is 193739064991. The reversal of 193739064964 is 469460937391.

The square root of 193739064964 is 440158.

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

It can be written as a sum of positive squares in only one way, i.e., 186142199364 + 7596865600 = 431442^2 + 87160^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 88910827 + ... + 88913005.

Almost surely, 2^193739064964 is an apocalyptic number.

193739064964 is the 440158-th square number.

It is an amenable number.

193739064964 is a deficient number, since it is larger than the sum of its proper divisors (148851623777).

193739064964 is an frugal number, since it uses more digits than its factorization.

193739064964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564 (or 2282 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 61.

The spelling of 193739064964 in words is "one hundred ninety-three billion, seven hundred thirty-nine million, sixty-four thousand, nine hundred sixty-four".