1990634130 has 96 divisors (see below), whose sum is σ = 5600859264. Its totient is φ = 507741696.

The previous prime is 1990634111. The next prime is 1990634137. The reversal of 1990634130 is 314360991.

1990634130 is a `hidden beast` number, since 1 + 9 + 9 + 0 + 634 + 13 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (1990634137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38082 + ... + 73698.

It is an arithmetic number, because the mean of its divisors is an integer number (58342284).

Almost surely, 2^1990634130 is an apocalyptic number.

1990634130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1990634130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2800429632).

1990634130 is an abundant number, since it is smaller than the sum of its proper divisors (3610225134).

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

1990634130 is a wasteful number, since it uses less digits than its factorization.

1990634130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35662 (or 35650 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 1990634130 is about 44616.5230604089. The cubic root of 1990634130 is about 1257.9512624314.

The spelling of 1990634130 in words is "one billion, nine hundred ninety million, six hundred thirty-four thousand, one hundred thirty".