630921968370 has 256 divisors, whose sum is σ = 1732529203200. Its totient is φ = 163325859840.

The previous prime is 630921968323. The next prime is 630921968377. The reversal of 630921968370 is 73869129036.

630921968370 is a `hidden beast` number, since 6 + 309 + 2 + 196 + 83 + 70 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (630921968377) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 954495840 + ... + 954496500.

It is an arithmetic number, because the mean of its divisors is an integer number (6767692200).

Almost surely, 2^630921968370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630921968370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866264601600).

630921968370 is an abundant number, since it is smaller than the sum of its proper divisors (1101607234830).

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

630921968370 is a wasteful number, since it uses less digits than its factorization.

630921968370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1442 (or 1436 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 630921968370 in words is "six hundred thirty billion, nine hundred twenty-one million, nine hundred sixty-eight thousand, three hundred seventy".