1205115000 has 80 divisors (see below), whose sum is σ = 3764826120. Its totient is φ = 321360000.

The previous prime is 1205114993. The next prime is 1205115011. The reversal of 1205115000 is 5115021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25171 + ... + 55170.

Almost surely, 2^1205115000 is an apocalyptic number.

1205115000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205115000 is an abundant number, since it is smaller than the sum of its proper divisors (2559711120).

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

1205115000 is an equidigital number, since it uses as much as digits as its factorization.

1205115000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80370 (or 80351 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 1205115000 is about 34714.7663106062. The cubic root of 1205115000 is about 1064.1662897049.

The spelling of 1205115000 in words is "one billion, two hundred five million, one hundred fifteen thousand".