631949450 has 24 divisors (see below), whose sum is σ = 1282284000. Its totient is φ = 229799600.

The previous prime is 631949419. The next prime is 631949453. The reversal of 631949450 is 54949136.

It is a junction number, because it is equal to n+sod(n) for n = 631949398 and 631949407.

It is not an unprimeable number, because it can be changed into a prime (631949453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 573950 + ... + 575049.

It is an arithmetic number, because the mean of its divisors is an integer number (53428500).

Almost surely, 2^631949450 is an apocalyptic number.

631949450 is an abundant number, since it is smaller than the sum of its proper divisors (650334550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631949450 is a wasteful number, since it uses less digits than its factorization.

631949450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149022 (or 1149017 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 631949450 is about 25138.6047743307. The cubic root of 631949450 is about 858.1452048391.

The spelling of 631949450 in words is "six hundred thirty-one million, nine hundred forty-nine thousand, four hundred fifty".