1630228992 has 320 divisors, whose sum is σ = 5271281664. Its totient is φ = 437944320.

The previous prime is 1630228973. The next prime is 1630229011. The reversal of 1630228992 is 2998220361.

It is an interprime number because it is at equal distance from previous prime (1630228973) and next prime (1630229011).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22331868 + ... + 22331940.

Almost surely, 2^1630228992 is an apocalyptic number.

1630228992 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 1630228992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2635640832).

1630228992 is an abundant number, since it is smaller than the sum of its proper divisors (3641052672).

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

1630228992 is an equidigital number, since it uses as much as digits as its factorization.

1630228992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1630228992 is about 40376.0943133434. The cubic root of 1630228992 is about 1176.9270306186.

The spelling of 1630228992 in words is "one billion, six hundred thirty million, two hundred twenty-eight thousand, nine hundred ninety-two".