1953168656 has 10 divisors (see below), whose sum is σ = 3784264302. Its totient is φ = 976584320.

The previous prime is 1953168653. The next prime is 1953168677. The reversal of 1953168656 is 6568613591.

It can be written as a sum of positive squares in only one way, i.e., 1168272400 + 784896256 = 34180^2 + 28016^2 .

It is not an unprimeable number, because it can be changed into a prime (1953168653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61036505 + ... + 61036536.

Almost surely, 2^1953168656 is an apocalyptic number.

1953168656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1953168656 is a deficient number, since it is larger than the sum of its proper divisors (1831095646).

1953168656 is a wasteful number, since it uses less digits than its factorization.

1953168656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122073049 (or 122073043 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 50.

The square root of 1953168656 is about 44194.6677326575. The cubic root of 1953168656 is about 1250.0093132106.

The spelling of 1953168656 in words is "one billion, nine hundred fifty-three million, one hundred sixty-eight thousand, six hundred fifty-six".