1656713933956 has 9 divisors (see below), whose sum is σ = 2899253889399. Its totient is φ = 828355679844.

The previous prime is 1656713933951. The next prime is 1656713934013. The reversal of 1656713933956 is 6593393176561.

The square root of 1656713933956 is 1287134.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1656713933951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2252485 + ... + 2896051.

Almost surely, 2^{1656713933956} is an apocalyptic number.

1656713933956 is the 1287134-th square number.

It is an amenable number.

1656713933956 is a deficient number, since it is larger than the sum of its proper divisors (1242539955443).

1656713933956 is an frugal number, since it uses more digits than its factorization.

1656713933956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287138 (or 643569 counting only the distinct ones).

The product of its digits is 82668600, while the sum is 64.

Multiplying 1656713933956 by its sum of digits (64), we get a square (106029691773184 = 10297072²).

The spelling of 1656713933956 in words is "one trillion, six hundred fifty-six billion, seven hundred thirteen million, nine hundred thirty-three thousand, nine hundred fifty-six".