1200749892 has 12 divisors (see below), whose sum is σ = 2801749776. Its totient is φ = 400249960.

The previous prime is 1200749861. The next prime is 1200749929. The reversal of 1200749892 is 2989470021.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50031234 + ... + 50031257.

It is an arithmetic number, because the mean of its divisors is an integer number (233479148).

Almost surely, 2^1200749892 is an apocalyptic number.

1200749892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200749892 is an abundant number, since it is smaller than the sum of its proper divisors (1600999884).

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

1200749892 is a wasteful number, since it uses less digits than its factorization.

1200749892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100062498 (or 100062496 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 1200749892 is about 34651.8382196385. The cubic root of 1200749892 is about 1062.8798784117.

The spelling of 1200749892 in words is "one billion, two hundred million, seven hundred forty-nine thousand, eight hundred ninety-two".