1634272481 has 2 divisors, whose sum is σ = 1634272482. Its totient is φ = 1634272480.

The previous prime is 1634272463. The next prime is 1634272501. The reversal of 1634272481 is 1842724361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1624090000 + 10182481 = 40300^2 + 3191^2 .

It is a cyclic number.

It is not a de Polignac number, because 1634272481 - 2⁶ = 1634272417 is a prime.

It is a super-2 number, since 2×1634272481² = 5341693084307790722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1634277481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817136240 + 817136241.

It is an arithmetic number, because the mean of its divisors is an integer number (817136241).

Almost surely, 2^1634272481 is an apocalyptic number.

It is an amenable number.

1634272481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1634272481 is an equidigital number, since it uses as much as digits as its factorization.

1634272481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 1634272481 is about 40426.1361126685. The cubic root of 1634272481 is about 1177.8992789784.

The spelling of 1634272481 in words is "one billion, six hundred thirty-four million, two hundred seventy-two thousand, four hundred eighty-one".