1630705265 has 8 divisors (see below), whose sum is σ = 2236395840. Its totient is φ = 1118197872.

The previous prime is 1630705249. The next prime is 1630705303. The reversal of 1630705265 is 5625070361.

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 1630705265 - 2⁴ = 1630705249 is a prime.

It is a super-2 number, since 2×1630705265² = 5318399322597440450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 46591579 = 1630705265 / (1 + 6 + 3 + 0 + 7 + 0 + 5 + 2 + 6 + 5).

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, 23295755 + ... + 23295824.

It is an arithmetic number, because the mean of its divisors is an integer number (279549480).

Almost surely, 2^1630705265 is an apocalyptic number.

It is an amenable number.

1630705265 is a deficient number, since it is larger than the sum of its proper divisors (605690575).

1630705265 is an equidigital number, since it uses as much as digits as its factorization.

1630705265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46591591.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 1630705265 is about 40381.9918404231. The cubic root of 1630705265 is about 1177.0416329213.

The spelling of 1630705265 in words is "one billion, six hundred thirty million, seven hundred five thousand, two hundred sixty-five".