1688494935241 has 9 divisors (see below), whose sum is σ = 1696391741421. Its totient is φ = 1680634737612.

The previous prime is 1688494935161. The next prime is 1688494935271. The reversal of 1688494935241 is 1425394948861.

The square root of 1688494935241 is 1299421.

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

It is not a de Polignac number, because 1688494935241 - 2¹¹ = 1688494933193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1688494935271) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 289767970 + ... + 289773796.

It is an arithmetic number, because the mean of its divisors is an integer number (188487971269).

Almost surely, 2^{1688494935241} is an apocalyptic number.

1688494935241 is the 1299421-st square number.

1688494935241 is the 649711-st centered octagonal number.

It is an amenable number.

1688494935241 is a deficient number, since it is larger than the sum of its proper divisors (7896806180).

1688494935241 is an frugal number, since it uses more digits than its factorization.

1688494935241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100 (or 6050 counting only the distinct ones).

The product of its digits is 59719680, while the sum is 64.

Multiplying 1688494935241 by its sum of digits (64), we get a square (108063675855424 = 10395368²).

The spelling of 1688494935241 in words is "one trillion, six hundred eighty-eight billion, four hundred ninety-four million, nine hundred thirty-five thousand, two hundred forty-one".