1235085645 has 16 divisors (see below), whose sum is σ = 2009632320. Its totient is φ = 647547264.

The previous prime is 1235085637. The next prime is 1235085667. The reversal of 1235085645 is 5465805321.

It is not a de Polignac number, because 1235085645 - 2³ = 1235085637 is a prime.

It is a super-3 number, since 3×1235085645³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 696904 + ... + 698673.

It is an arithmetic number, because the mean of its divisors is an integer number (125602020).

Almost surely, 2^1235085645 is an apocalyptic number.

1235085645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1235085645 is a deficient number, since it is larger than the sum of its proper divisors (774546675).

1235085645 is a wasteful number, since it uses less digits than its factorization.

1235085645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395644.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 1235085645 is about 35143.7852969768. The cubic root of 1235085645 is about 1072.9159247694.

The spelling of 1235085645 in words is "one billion, two hundred thirty-five million, eighty-five thousand, six hundred forty-five".