1634872601 has 2 divisors, whose sum is σ = 1634872602. Its totient is φ = 1634872600.

The previous prime is 1634872571. The next prime is 1634872627. The reversal of 1634872601 is 1062784361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1627315600 + 7557001 = 40340^2 + 2749^2 .

It is a cyclic number.

It is not a de Polignac number, because 1634872601 - 2¹⁰ = 1634871577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1634872691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 817436300 + 817436301.

It is an arithmetic number, because the mean of its divisors is an integer number (817436301).

Almost surely, 2^1634872601 is an apocalyptic number.

It is an amenable number.

1634872601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1634872601 is an equidigital number, since it uses as much as digits as its factorization.

1634872601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1634872601 is about 40433.5578573046. The cubic root of 1634872601 is about 1178.0434398444.

The spelling of 1634872601 in words is "one billion, six hundred thirty-four million, eight hundred seventy-two thousand, six hundred one".