1157205163 has 4 divisors (see below), whose sum is σ = 1165530520. Its totient is φ = 1148879808.

The previous prime is 1157205109. The next prime is 1157205209. The reversal of 1157205163 is 3615027511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3615027511 = 1777 ⋅2034343.

It is a cyclic number.

It is not a de Polignac number, because 1157205163 - 2⁹ = 1157204651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157208163) 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, 4162470 + ... + 4162747.

It is an arithmetic number, because the mean of its divisors is an integer number (291382630).

Almost surely, 2^1157205163 is an apocalyptic number.

1157205163 is a deficient number, since it is larger than the sum of its proper divisors (8325357).

1157205163 is an equidigital number, since it uses as much as digits as its factorization.

1157205163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8325356.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 1157205163 is about 34017.7183685208. The cubic root of 1157205163 is about 1049.8730498067.

The spelling of 1157205163 in words is "one billion, one hundred fifty-seven million, two hundred five thousand, one hundred sixty-three".