1168201957 has 4 divisors (see below), whose sum is σ = 1258063660. Its totient is φ = 1078340256.

The previous prime is 1168201949. The next prime is 1168201963. The reversal of 1168201957 is 7591028611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7591028611 = 56123 ⋅135257.

It can be written as a sum of positive squares in 2 ways, for example, as 114939841 + 1053262116 = 10721^2 + 32454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1168201957 - 2³ = 1168201949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1168201997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44930832 + ... + 44930857.

It is an arithmetic number, because the mean of its divisors is an integer number (314515915).

Almost surely, 2^1168201957 is an apocalyptic number.

It is an amenable number.

1168201957 is a deficient number, since it is larger than the sum of its proper divisors (89861703).

1168201957 is an equidigital number, since it uses as much as digits as its factorization.

1168201957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89861702.

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 1168201957 is about 34178.9695134303. The cubic root of 1168201957 is about 1053.1881803290.

The spelling of 1168201957 in words is "one billion, one hundred sixty-eight million, two hundred one thousand, nine hundred fifty-seven".