1189497313 has 4 divisors (see below), whose sum is σ = 1189653808. Its totient is φ = 1189340820.

The previous prime is 1189497307. The next prime is 1189497359. The reversal of 1189497313 is 3137949811.

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 a cyclic number.

It is not a de Polignac number, because 1189497313 - 2⁹ = 1189496801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1189497383) 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, 66231 + ... + 82252.

It is an arithmetic number, because the mean of its divisors is an integer number (297413452).

Almost surely, 2^1189497313 is an apocalyptic number.

It is an amenable number.

1189497313 is a deficient number, since it is larger than the sum of its proper divisors (156495).

1189497313 is an equidigital number, since it uses as much as digits as its factorization.

1189497313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156494.

The product of its digits is 163296, while the sum is 46.

The square root of 1189497313 is about 34489.0897676352. The cubic root of 1189497313 is about 1059.5492663582.

The spelling of 1189497313 in words is "one billion, one hundred eighty-nine million, four hundred ninety-seven thousand, three hundred thirteen".