1630701220 has 24 divisors (see below), whose sum is σ = 3604708800. Its totient is φ = 617949792.

The previous prime is 1630701203. The next prime is 1630701263. The reversal of 1630701220 is 221070361.

It is a junction number, because it is equal to n+sod(n) for n = 1630701191 and 1630701200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2145280 + ... + 2146039.

It is an arithmetic number, because the mean of its divisors is an integer number (150196200).

Almost surely, 2^1630701220 is an apocalyptic number.

1630701220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1630701220 is an abundant number, since it is smaller than the sum of its proper divisors (1974007580).

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

1630701220 is a wasteful number, since it uses less digits than its factorization.

1630701220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291347 (or 4291345 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1630701220 is about 40381.9417561860. The cubic root of 1630701220 is about 1177.0406596947.

Adding to 1630701220 its reverse (221070361), we get a palindrome (1851771581).

The spelling of 1630701220 in words is "one billion, six hundred thirty million, seven hundred one thousand, two hundred twenty".