1205645010 has 32 divisors (see below), whose sum is σ = 2923385472. Its totient is φ = 318190080.

The previous prime is 1205645003. The next prime is 1205645011. The reversal of 1205645010 is 105465021.

It is not an unprimeable number, because it can be changed into a prime (1205645011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204246 + ... + 210065.

It is an arithmetic number, because the mean of its divisors is an integer number (91355796).

Almost surely, 2^1205645010 is an apocalyptic number.

1205645010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1205645010 is an abundant number, since it is smaller than the sum of its proper divisors (1717740462).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205645010 is a wasteful number, since it uses less digits than its factorization.

1205645010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414418.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1205645010 is about 34722.3992546598. The cubic root of 1205645010 is about 1064.3222737425.

The spelling of 1205645010 in words is "one billion, two hundred five million, six hundred forty-five thousand, ten".