1630521016 has 16 divisors (see below), whose sum is σ = 3060954000. Its totient is φ = 814266624.

The previous prime is 1630521007. The next prime is 1630521019. The reversal of 1630521016 is 6101250361.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630521019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117241 + ... + 130408.

It is an arithmetic number, because the mean of its divisors is an integer number (191309625).

Almost surely, 2^1630521016 is an apocalyptic number.

It is an amenable number.

1630521016 is a deficient number, since it is larger than the sum of its proper divisors (1430432984).

1630521016 is a wasteful number, since it uses less digits than its factorization.

1630521016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248478 (or 248474 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1630521016 is about 40379.7104496800. The cubic root of 1630521016 is about 1176.9973009960.

Adding to 1630521016 its reverse (6101250361), we get a palindrome (7731771377).

The spelling of 1630521016 in words is "one billion, six hundred thirty million, five hundred twenty-one thousand, sixteen".