1630330061 has 4 divisors (see below), whose sum is σ = 1634396124. Its totient is φ = 1626264000.

The previous prime is 1630330057. The next prime is 1630330063. The reversal of 1630330061 is 1600330361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1260960100 + 369369961 = 35510^2 + 19219^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630330061 - 2² = 1630330057 is a prime.

It is a super-2 number, since 2×1630330061² = 5315952215600527442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630330063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2032430 + ... + 2033231.

It is an arithmetic number, because the mean of its divisors is an integer number (408599031).

Almost surely, 2^1630330061 is an apocalyptic number.

It is an amenable number.

1630330061 is a deficient number, since it is larger than the sum of its proper divisors (4066063).

1630330061 is an equidigital number, since it uses as much as digits as its factorization.

1630330061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066062.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 1630330061 is about 40377.3458885054. The cubic root of 1630330061 is about 1176.9513520239.

It can be divided in two parts, 16303 and 30061, that added together give a palindrome (46364).

The spelling of 1630330061 in words is "one billion, six hundred thirty million, three hundred thirty thousand, sixty-one".