1630826685 has 48 divisors (see below), whose sum is σ = 2859816960. Its totient is φ = 859662720.

The previous prime is 1630826683. The next prime is 1630826693. The reversal of 1630826685 is 5866280361.

1630826685 is a `hidden beast` number, since 1 + 6 + 308 + 266 + 85 = 666.

It is not a de Polignac number, because 1630826685 - 2¹ = 1630826683 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1630826685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630826683) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2634306 + ... + 2634924.

It is an arithmetic number, because the mean of its divisors is an integer number (59579520).

Almost surely, 2^1630826685 is an apocalyptic number.

1630826685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1630826685 is a deficient number, since it is larger than the sum of its proper divisors (1228990275).

1630826685 is a wasteful number, since it uses less digits than its factorization.

1630826685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218 (or 1215 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 1630826685 is about 40383.4952053435. The cubic root of 1630826685 is about 1177.0708458128.

The spelling of 1630826685 in words is "one billion, six hundred thirty million, eight hundred twenty-six thousand, six hundred eighty-five".