1213440038 has 8 divisors (see below), whose sum is σ = 1820316888. Its totient is φ = 606667744.

The previous prime is 1213440023. The next prime is 1213440071. The reversal of 1213440038 is 8300443121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1213439989 and 1213440016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17345 + ... + 52227.

It is an arithmetic number, because the mean of its divisors is an integer number (227539611).

Almost surely, 2^1213440038 is an apocalyptic number.

1213440038 is a deficient number, since it is larger than the sum of its proper divisors (606876850).

1213440038 is a wasteful number, since it uses less digits than its factorization.

1213440038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52278.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1213440038 is about 34834.4662367604. The cubic root of 1213440038 is about 1066.6111193513.

Adding to 1213440038 its reverse (8300443121), we get a palindrome (9513883159).

The spelling of 1213440038 in words is "one billion, two hundred thirteen million, four hundred forty thousand, thirty-eight".