1161513383 has 4 divisors (see below), whose sum is σ = 1180554648. Its totient is φ = 1142472120.

The previous prime is 1161513359. The next prime is 1161513401. The reversal of 1161513383 is 3833151611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3833151611 = 61 ⋅62838551.

It is a cyclic number.

It is not a de Polignac number, because 1161513383 - 2²⁰ = 1160464807 is a prime.

It is a super-2 number, since 2×1161513383² = 2698226677776209378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161513323) 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, 9520541 + ... + 9520662.

It is an arithmetic number, because the mean of its divisors is an integer number (295138662).

Almost surely, 2^1161513383 is an apocalyptic number.

1161513383 is a deficient number, since it is larger than the sum of its proper divisors (19041265).

1161513383 is an equidigital number, since it uses as much as digits as its factorization.

1161513383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19041264.

The product of its digits is 6480, while the sum is 32.

The square root of 1161513383 is about 34080.9827176389. The cubic root of 1161513383 is about 1051.1743121699.

Adding to 1161513383 its reverse (3833151611), we get a palindrome (4994664994).

The spelling of 1161513383 in words is "one billion, one hundred sixty-one million, five hundred thirteen thousand, three hundred eighty-three".