1205455013 has 16 divisors (see below), whose sum is σ = 1408450560. Its totient is φ = 1010203056.

The previous prime is 1205454979. The next prime is 1205455049. The reversal of 1205455013 is 3105545021.

It is a cyclic number.

It is not a de Polignac number, because 1205455013 - 2¹⁶ = 1205389477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205455613) 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, 577670 + ... + 579752.

It is an arithmetic number, because the mean of its divisors is an integer number (88028160).

Almost surely, 2^1205455013 is an apocalyptic number.

It is an amenable number.

1205455013 is a deficient number, since it is larger than the sum of its proper divisors (202995547).

1205455013 is a wasteful number, since it uses less digits than its factorization.

1205455013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1205455013 is about 34719.6632040116. The cubic root of 1205455013 is about 1064.2663621320.

The spelling of 1205455013 in words is "one billion, two hundred five million, four hundred fifty-five thousand, thirteen".