1097630785 has 4 divisors (see below), whose sum is σ = 1317156948. Its totient is φ = 878104624.

The previous prime is 1097630759. The next prime is 1097630813. The reversal of 1097630785 is 5870367901.

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 276922881 + 820707904 = 16641^2 + 28648^2 .

It is a cyclic number.

It is not a de Polignac number, because 1097630785 - 2¹¹ = 1097628737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109763074 + ... + 109763083.

It is an arithmetic number, because the mean of its divisors is an integer number (329289237).

Almost surely, 2^1097630785 is an apocalyptic number.

It is an amenable number.

1097630785 is a deficient number, since it is larger than the sum of its proper divisors (219526163).

1097630785 is an equidigital number, since it uses as much as digits as its factorization.

1097630785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219526162.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 1097630785 is about 33130.5113905596. The cubic root of 1097630785 is about 1031.5384634841.

The spelling of 1097630785 in words is "one billion, ninety-seven million, six hundred thirty thousand, seven hundred eighty-five".