1195280491 has 4 divisors (see below), whose sum is σ = 1247249232. Its totient is φ = 1143311752.

The previous prime is 1195280473. The next prime is 1195280521. The reversal of 1195280491 is 1940825911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1940825911 = 3559 ⋅545329.

It is a cyclic number.

It is not a de Polignac number, because 1195280491 - 2¹¹ = 1195278443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1195281491) 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, 25984336 + ... + 25984381.

It is an arithmetic number, because the mean of its divisors is an integer number (311812308).

Almost surely, 2^1195280491 is an apocalyptic number.

1195280491 is a deficient number, since it is larger than the sum of its proper divisors (51968741).

1195280491 is an equidigital number, since it uses as much as digits as its factorization.

1195280491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51968740.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1195280491 is about 34572.8287966143. The cubic root of 1195280491 is about 1061.2636203159.

The spelling of 1195280491 in words is "one billion, one hundred ninety-five million, two hundred eighty thousand, four hundred ninety-one".