1200861516 has 24 divisors (see below), whose sum is σ = 2867174464. Its totient is φ = 390978000.

The previous prime is 1200861511. The next prime is 1200861523. The reversal of 1200861516 is 6151680021.

It is not an unprimeable number, because it can be changed into a prime (1200861511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1163110 + ... + 1164141.

Almost surely, 2^1200861516 is an apocalyptic number.

It is an amenable number.

1200861516 is an abundant number, since it is smaller than the sum of its proper divisors (1666312948).

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

1200861516 is a wasteful number, since it uses less digits than its factorization.

1200861516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327301 (or 2327299 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1200861516 is about 34653.4488326920. The cubic root of 1200861516 is about 1062.9128131714.

The spelling of 1200861516 in words is "one billion, two hundred million, eight hundred sixty-one thousand, five hundred sixteen".