1213930365 has 16 divisors (see below), whose sum is σ = 1947504768. Its totient is φ = 645690816.

The previous prime is 1213930357. The next prime is 1213930423. The reversal of 1213930365 is 5630393121.

It is not a de Polignac number, because 1213930365 - 2³ = 1213930357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102889 + ... + 114078.

It is an arithmetic number, because the mean of its divisors is an integer number (121719048).

Almost surely, 2^1213930365 is an apocalyptic number.

1213930365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1213930365 is a deficient number, since it is larger than the sum of its proper divisors (733574403).

1213930365 is a wasteful number, since it uses less digits than its factorization.

1213930365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217348.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 1213930365 is about 34841.5034836328. The cubic root of 1213930365 is about 1066.7547654557.

The spelling of 1213930365 in words is "one billion, two hundred thirteen million, nine hundred thirty thousand, three hundred sixty-five".