1630737738 has 192 divisors, whose sum is σ = 4487040000. Its totient is φ = 436490208.

The previous prime is 1630737737. The next prime is 1630737811. The reversal of 1630737738 is 8377370361.

1630737738 is a `hidden beast` number, since 1 + 630 + 7 + 3 + 7 + 7 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1630737693 and 1630737702.

It is not an unprimeable number, because it can be changed into a prime (1630737737) 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 95 ways as a sum of consecutive naturals, for example, 8194563 + ... + 8194761.

It is an arithmetic number, because the mean of its divisors is an integer number (23370000).

Almost surely, 2^1630737738 is an apocalyptic number.

1630737738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630737738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2243520000).

1630737738 is an abundant number, since it is smaller than the sum of its proper divisors (2856302262).

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

1630737738 is a wasteful number, since it uses less digits than its factorization.

1630737738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The square root of 1630737738 is about 40382.3939112084. The cubic root of 1630737738 is about 1177.0494458638.

It can be divided in two parts, 16307 and 37738, that added together give a palindrome (54045).

The spelling of 1630737738 in words is "one billion, six hundred thirty million, seven hundred thirty-seven thousand, seven hundred thirty-eight".