1630047672 has 128 divisors (see below), whose sum is σ = 4978195200. Its totient is φ = 490089600.

The previous prime is 1630047649. The next prime is 1630047739. The reversal of 1630047672 is 2767400361.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 308638 + ... + 313874.

It is an arithmetic number, because the mean of its divisors is an integer number (38892150).

Almost surely, 2^1630047672 is an apocalyptic number.

1630047672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630047672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2489097600).

1630047672 is an abundant number, since it is smaller than the sum of its proper divisors (3348147528).

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

1630047672 is a wasteful number, since it uses less digits than its factorization.

1630047672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5394 (or 5384 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 1630047672 is about 40373.8488628469. The cubic root of 1630047672 is about 1176.8833949653.

The spelling of 1630047672 in words is "one billion, six hundred thirty million, forty-seven thousand, six hundred seventy-two".