1630517217 has 16 divisors (see below), whose sum is σ = 2492700672. Its totient is φ = 928685520.

The previous prime is 1630517197. The next prime is 1630517263. The reversal of 1630517217 is 7127150361.

It is not a de Polignac number, because 1630517217 - 2¹⁰ = 1630516193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1630517267) 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, 120009 + ... + 132902.

It is an arithmetic number, because the mean of its divisors is an integer number (155793792).

Almost surely, 2^1630517217 is an apocalyptic number.

It is an amenable number.

1630517217 is a deficient number, since it is larger than the sum of its proper divisors (862183455).

1630517217 is a wasteful number, since it uses less digits than its factorization.

1630517217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253228.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 1630517217 is about 40379.6634087012. The cubic root of 1630517217 is about 1176.9963868881.

Adding to 1630517217 its reverse (7127150361), we get a palindrome (8757667578).

The spelling of 1630517217 in words is "one billion, six hundred thirty million, five hundred seventeen thousand, two hundred seventeen".