1219400135 has 8 divisors (see below), whose sum is σ = 1463470416. Its totient is φ = 975393280.

The previous prime is 1219400129. The next prime is 1219400153. The reversal of 1219400135 is 5310049121.

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

It is not a de Polignac number, because 1219400135 - 2²⁰ = 1218351559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56312 + ... + 74898.

It is an arithmetic number, because the mean of its divisors is an integer number (182933802).

Almost surely, 2^1219400135 is an apocalyptic number.

1219400135 is a deficient number, since it is larger than the sum of its proper divisors (244070281).

1219400135 is a wasteful number, since it uses less digits than its factorization.

1219400135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31713.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1219400135 is about 34919.9102948447. The cubic root of 1219400135 is about 1068.3545720425.

Adding to 1219400135 its reverse (5310049121), we get a palindrome (6529449256).

The spelling of 1219400135 in words is "one billion, two hundred nineteen million, four hundred thousand, one hundred thirty-five".