1630797958729 has 9 divisors (see below), whose sum is σ = 1671597322311. Its totient is φ = 1590971317680.

The previous prime is 1630797958687. The next prime is 1630797958763. The reversal of 1630797958729 is 9278597970361.

The square root of 1630797958729 is 1277027.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 78580984329 + 1552216974400 = 280323^2 + 1245880^2 .

It is not a de Polignac number, because 1630797958729 - 2²³ = 1630789570121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630797958789) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 52342534 + ... + 52373680.

Almost surely, 2^{1630797958729} is an apocalyptic number.

1630797958729 is the 1277027-th square number.

1630797958729 is the 638514-th centered octagonal number.

It is an amenable number.

1630797958729 is a deficient number, since it is larger than the sum of its proper divisors (40799363582).

1630797958729 is an frugal number, since it uses more digits than its factorization.

1630797958729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62376 (or 31188 counting only the distinct ones).

The product of its (nonzero) digits is 360067680, while the sum is 73.

The spelling of 1630797958729 in words is "one trillion, six hundred thirty billion, seven hundred ninety-seven million, nine hundred fifty-eight thousand, seven hundred twenty-nine".