1213095830 has 8 divisors (see below), whose sum is σ = 2183572512. Its totient is φ = 485238328.

The previous prime is 1213095811. The next prime is 1213095857. The reversal of 1213095830 is 385903121.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60654782 + ... + 60654801.

It is an arithmetic number, because the mean of its divisors is an integer number (272946564).

Almost surely, 2^1213095830 is an apocalyptic number.

1213095830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213095830 is a deficient number, since it is larger than the sum of its proper divisors (970476682).

1213095830 is a wasteful number, since it uses less digits than its factorization.

1213095830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121309590.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1213095830 is about 34829.5252623403. The cubic root of 1213095830 is about 1066.5102571226.

Adding to 1213095830 its reverse (385903121), we get a palindrome (1598998951).

The spelling of 1213095830 in words is "one billion, two hundred thirteen million, ninety-five thousand, eight hundred thirty".