1634412020 has 24 divisors (see below), whose sum is σ = 3470833800. Its totient is φ = 646418432.

The previous prime is 1634412001. The next prime is 1634412023. The reversal of 1634412020 is 202144361.

It can be written as a sum of positive squares in 4 ways, for example, as 301577956 + 1332834064 = 17366^2 + 36508^2 .

It is a super-2 number, since 2×1634412020² = 5342605302240960800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634412023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 457325 + ... + 460884.

It is an arithmetic number, because the mean of its divisors is an integer number (144618075).

Almost surely, 2^1634412020 is an apocalyptic number.

1634412020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1634412020 is an abundant number, since it is smaller than the sum of its proper divisors (1836421780).

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

1634412020 is a wasteful number, since it uses less digits than its factorization.

1634412020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918307 (or 918305 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1634412020 is about 40427.8619271413. The cubic root of 1634412020 is about 1177.9328021947.

Adding to 1634412020 its reverse (202144361), we get a palindrome (1836556381).

The spelling of 1634412020 in words is "one billion, six hundred thirty-four million, four hundred twelve thousand, twenty".