1634200641 has 6 divisors (see below), whose sum is σ = 2360512050. Its totient is φ = 1089467088.

The previous prime is 1634200573. The next prime is 1634200651. The reversal of 1634200641 is 1460024361.

1634200641 is a `hidden beast` number, since 1 + 634 + 20 + 0 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1605685041 + 28515600 = 40071^2 + 5340^2 .

It is not a de Polignac number, because 1634200641 - 2¹⁴ = 1634184257 is a prime.

It is a super-2 number, since 2×1634200641² = 5341223470089621762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1634200651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 90788916 + ... + 90788933.

It is an arithmetic number, because the mean of its divisors is an integer number (393418675).

Almost surely, 2^1634200641 is an apocalyptic number.

It is an amenable number.

1634200641 is a deficient number, since it is larger than the sum of its proper divisors (726311409).

1634200641 is a wasteful number, since it uses less digits than its factorization.

1634200641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181577855 (or 181577852 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1634200641 is about 40425.2475688152. The cubic root of 1634200641 is about 1177.8820192038.

The spelling of 1634200641 in words is "one billion, six hundred thirty-four million, two hundred thousand, six hundred forty-one".