1195140549 has 4 divisors (see below), whose sum is σ = 1593520736. Its totient is φ = 796760364.

The previous prime is 1195140533. The next prime is 1195140563. The reversal of 1195140549 is 9450415911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1195140549 - 2⁴ = 1195140533 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 (1195150549) 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, 199190089 + ... + 199190094.

It is an arithmetic number, because the mean of its divisors is an integer number (398380184).

Almost surely, 2^1195140549 is an apocalyptic number.

It is an amenable number.

1195140549 is a deficient number, since it is larger than the sum of its proper divisors (398380187).

1195140549 is an equidigital number, since it uses as much as digits as its factorization.

1195140549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398380186.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1195140549 is about 34570.8048647989. The cubic root of 1195140549 is about 1061.2222015440. Note that the first 4 decimals are identical.

The spelling of 1195140549 in words is "one billion, one hundred ninety-five million, one hundred forty thousand, five hundred forty-nine".