1956168953 has 2 divisors, whose sum is σ = 1956168954. Its totient is φ = 1956168952.

The previous prime is 1956168931. The next prime is 1956168967. The reversal of 1956168953 is 3598616591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1420385344 + 535783609 = 37688^2 + 23147^2 .

It is a cyclic number.

It is not a de Polignac number, because 1956168953 - 2⁶ = 1956168889 is a prime.

It is a super-2 number, since 2×1956168953² = 7653193945362232418, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1956168895 and 1956168904.

It is not a weakly prime, because it can be changed into another prime (1956168553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978084476 + 978084477.

It is an arithmetic number, because the mean of its divisors is an integer number (978084477).

Almost surely, 2^1956168953 is an apocalyptic number.

It is an amenable number.

1956168953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956168953 is an equidigital number, since it uses as much as digits as its factorization.

1956168953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1749600, while the sum is 53.

The square root of 1956168953 is about 44228.5988134374. The cubic root of 1956168953 is about 1250.6490395798.

The spelling of 1956168953 in words is "one billion, nine hundred fifty-six million, one hundred sixty-eight thousand, nine hundred fifty-three".