1191453083 has 4 divisors (see below), whose sum is σ = 1254161160. Its totient is φ = 1128745008.

The previous prime is 1191453079. The next prime is 1191453089. The reversal of 1191453083 is 3803541911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3803541911 = 13 ⋅292580147.

It is not a de Polignac number, because 1191453083 - 2² = 1191453079 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1191453089) 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, 31354010 + ... + 31354047.

It is an arithmetic number, because the mean of its divisors is an integer number (313540290).

Almost surely, 2^1191453083 is an apocalyptic number.

1191453083 is a deficient number, since it is larger than the sum of its proper divisors (62708077).

1191453083 is an equidigital number, since it uses as much as digits as its factorization.

1191453083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62708076.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1191453083 is about 34517.4315817385. The cubic root of 1191453083 is about 1060.1296515793.

Adding to 1191453083 its reverse (3803541911), we get a palindrome (4994994994).

The spelling of 1191453083 in words is "one billion, one hundred ninety-one million, four hundred fifty-three thousand, eighty-three".