1630772851 has 8 divisors (see below), whose sum is σ = 1635845904. Its totient is φ = 1625708640.

The previous prime is 1630772849. The next prime is 1630772879. The reversal of 1630772851 is 1582770361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1630772851 - 2¹ = 1630772849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630772951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573405 + ... + 576241.

It is an arithmetic number, because the mean of its divisors is an integer number (204480738).

Almost surely, 2^1630772851 is an apocalyptic number.

1630772851 is a deficient number, since it is larger than the sum of its proper divisors (5073053).

1630772851 is a wasteful number, since it uses less digits than its factorization.

1630772851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 1630772851 is about 40382.8286651641. The cubic root of 1630772851 is about 1177.0578938685.

The spelling of 1630772851 in words is "one billion, six hundred thirty million, seven hundred seventy-two thousand, eight hundred fifty-one".