630361449 has 9 divisors (see below), whose sum is σ = 910630903. Its totient is φ = 420190752.

The previous prime is 630361441. The next prime is 630361451. The reversal of 630361449 is 944163036.

The square root of 630361449 is 25107.

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

630361449 is a `hidden beast` number, since 6 + 30 + 3 + 614 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 456121449 + 174240000 = 21357^2 + 13200^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 630361449 - 2³ = 630361441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (630361441) 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, 71137 + ... + 79505.

Almost surely, 2^630361449 is an apocalyptic number.

630361449 is the 25107-th square number.

630361449 is the 12554-th centered octagonal number.

It is an amenable number.

630361449 is a deficient number, since it is larger than the sum of its proper divisors (280269454).

630361449 is an frugal number, since it uses more digits than its factorization.

630361449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16744 (or 8372 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The cubic root of 630361449 is about 857.4258021008.

Multiplying 630361449 by its sum of digits (36), we get a square (22693012164 = 150642²).

Multiplying 630361449 by its product of nonzero digits (46656), we get a square (29410143764544 = 5423112²).

The spelling of 630361449 in words is "six hundred thirty million, three hundred sixty-one thousand, four hundred forty-nine".