1219400134 has 16 divisors (see below), whose sum is σ = 1863356400. Its totient is φ = 598349664.

The previous prime is 1219400129. The next prime is 1219400153. The reversal of 1219400134 is 4310049121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1219400099 and 1219400108.

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, 19132 + ... + 52960.

It is an arithmetic number, because the mean of its divisors is an integer number (116459775).

Almost surely, 2^1219400134 is an apocalyptic number.

1219400134 is a deficient number, since it is larger than the sum of its proper divisors (643956266).

1219400134 is a wasteful number, since it uses less digits than its factorization.

1219400134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34167.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1219400134 is about 34919.9102805262. The cubic root of 1219400134 is about 1068.3545717505.

Adding to 1219400134 its reverse (4310049121), we get a palindrome (5529449255).

The spelling of 1219400134 in words is "one billion, two hundred nineteen million, four hundred thousand, one hundred thirty-four".