1634653056 has 128 divisors (see below), whose sum is σ = 4609094400. Its totient is φ = 512196608.

The previous prime is 1634653043. The next prime is 1634653057. The reversal of 1634653056 is 6503564361.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1634653056² = 5344181226980278272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634653057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519520 + ... + 522656.

It is an arithmetic number, because the mean of its divisors is an integer number (36008550).

Almost surely, 2^1634653056 is an apocalyptic number.

1634653056 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 1634653056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2304547200).

1634653056 is an abundant number, since it is smaller than the sum of its proper divisors (2974441344).

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

1634653056 is a wasteful number, since it uses less digits than its factorization.

1634653056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236 (or 3224 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 1634653056 is about 40430.8428801577. The cubic root of 1634653056 is about 1177.9907048230.

The spelling of 1634653056 in words is "one billion, six hundred thirty-four million, six hundred fifty-three thousand, fifty-six".