1634425400 has 96 divisors (see below), whose sum is σ = 3942604800. Its totient is φ = 629462400.

The previous prime is 1634425393. The next prime is 1634425411. The reversal of 1634425400 is 45244361.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1481249 + ... + 1482351.

It is an arithmetic number, because the mean of its divisors is an integer number (41068800).

Almost surely, 2^1634425400 is an apocalyptic number.

1634425400 is a gapful number since it is divisible by the number (10) 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 1634425400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1971302400).

1634425400 is an abundant number, since it is smaller than the sum of its proper divisors (2308179400).

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

1634425400 is a wasteful number, since it uses less digits than its factorization.

1634425400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 1634425400 is about 40428.0274067385. The cubic root of 1634425400 is about 1177.9360165409.

Adding to 1634425400 its reverse (45244361), we get a palindrome (1679669761).

The spelling of 1634425400 in words is "one billion, six hundred thirty-four million, four hundred twenty-five thousand, four hundred".