1201383612 has 144 divisors (see below), whose sum is σ = 3602158560. Its totient is φ = 332812800.

The previous prime is 1201383581. The next prime is 1201383629. The reversal of 1201383612 is 2163831021.

It is a happy number.

1201383612 is a `hidden beast` number, since 12 + 0 + 1 + 38 + 3 + 612 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 560062 + ... + 562202.

It is an arithmetic number, because the mean of its divisors is an integer number (25014990).

Almost surely, 2^1201383612 is an apocalyptic number.

1201383612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201383612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801079280).

1201383612 is an abundant number, since it is smaller than the sum of its proper divisors (2400774948).

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

1201383612 is a wasteful number, since it uses less digits than its factorization.

1201383612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1201383612 is about 34660.9811171005. The cubic root of 1201383612 is about 1063.0668309651.

The spelling of 1201383612 in words is "one billion, two hundred one million, three hundred eighty-three thousand, six hundred twelve".