1189998313 has 8 divisors (see below), whose sum is σ = 1361538432. Its totient is φ = 1018843296.

The previous prime is 1189998287. The next prime is 1189998349. The reversal of 1189998313 is 3138999811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1189998313 - 2⁵ = 1189998281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1189998353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89620 + ... + 102037.

It is an arithmetic number, because the mean of its divisors is an integer number (170192304).

Almost surely, 2^1189998313 is an apocalyptic number.

It is an amenable number.

1189998313 is a deficient number, since it is larger than the sum of its proper divisors (171540119).

1189998313 is an equidigital number, since it uses as much as digits as its factorization.

1189998313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192551.

The product of its digits is 419904, while the sum is 52.

The square root of 1189998313 is about 34496.3521694686. The cubic root of 1189998313 is about 1059.6980013651.

The spelling of 1189998313 in words is "one billion, one hundred eighty-nine million, nine hundred ninety-eight thousand, three hundred thirteen".