1631673651630 has 64 divisors (see below), whose sum is σ = 4272535496448. Its totient is φ = 395509359360.

The previous prime is 1631673651557. The next prime is 1631673651637. The reversal of 1631673651630 is 361563761361.

It is a self number, because there is not a number n which added to its sum of digits gives 1631673651630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631673651637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2469289 + ... + 3059531.

It is an arithmetic number, because the mean of its divisors is an integer number (66758367132).

Almost surely, 2^{1631673651630} is an apocalyptic number.

1631673651630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1631673651630 is an abundant number, since it is smaller than the sum of its proper divisors (2640861844818).

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

1631673651630 is a wasteful number, since it uses less digits than its factorization.

1631673651630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598641.

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 1631673651630 in words is "one trillion, six hundred thirty-one billion, six hundred seventy-three million, six hundred fifty-one thousand, six hundred thirty".