193730261904 has 135 divisors (see below), whose sum is σ = 555729124977. Its totient is φ = 63001024128.

The previous prime is 193730261863. The next prime is 193730261927. The reversal of 193730261904 is 409162037391.

The square root of 193730261904 is 440148.

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

193730261904 is a `hidden beast` number, since 19 + 373 + 0 + 261 + 9 + 0 + 4 = 666.

193730261904 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11189408400 + 182540853504 = 105780^2 + 427248^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 193730261904.

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, 227115942 + ... + 227116794.

Almost surely, 2^193730261904 is an apocalyptic number.

193730261904 is the 440148-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 193730261904

193730261904 is an abundant number, since it is smaller than the sum of its proper divisors (361998863073).

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

193730261904 is an frugal number, since it uses more digits than its factorization.

193730261904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The spelling of 193730261904 in words is "one hundred ninety-three billion, seven hundred thirty million, two hundred sixty-one thousand, nine hundred four".