1634881152 has 32 divisors (see below), whose sum is σ = 4342654080. Its totient is φ = 544960256.

The previous prime is 1634881123. The next prime is 1634881153. The reversal of 1634881152 is 2511884361.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1634881152.

It is not an unprimeable number, because it can be changed into a prime (1634881153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128368 + ... + 2129135.

It is an arithmetic number, because the mean of its divisors is an integer number (135707940).

Almost surely, 2^1634881152 is an apocalyptic number.

1634881152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1634881152 is an abundant number, since it is smaller than the sum of its proper divisors (2707772928).

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

1634881152 is an equidigital number, since it uses as much as digits as its factorization.

1634881152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257520 (or 4257508 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 1634881152 is about 40433.6635985413. The cubic root of 1634881152 is about 1178.0454937113.

The spelling of 1634881152 in words is "one billion, six hundred thirty-four million, eight hundred eighty-one thousand, one hundred fifty-two".