1234635136 has 64 divisors (see below), whose sum is σ = 2815812000. Its totient is φ = 528224256.

The previous prime is 1234635131. The next prime is 1234635139. The reversal of 1234635136 is 6315364321.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234635131) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 957180 + ... + 958468.

Almost surely, 2^1234635136 is an apocalyptic number.

1234635136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234635136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407906000).

1234635136 is an abundant number, since it is smaller than the sum of its proper divisors (1581176864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1234635136 is a wasteful number, since it uses less digits than its factorization.

1234635136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379 (or 2367 counting only the distinct ones).

The product of its digits is 38880, while the sum is 34.

The square root of 1234635136 is about 35137.3752007745. The cubic root of 1234635136 is about 1072.7854568773.

Adding to 1234635136 its reverse (6315364321), we get a palindrome (7549999457).

The spelling of 1234635136 in words is "one billion, two hundred thirty-four million, six hundred thirty-five thousand, one hundred thirty-six".