1201019976 has 96 divisors (see below), whose sum is σ = 3523698360. Its totient is φ = 367358976.

The previous prime is 1201019969. The next prime is 1201019993. The reversal of 1201019976 is 6799101021.

It can be written as a sum of positive squares in 4 ways, for example, as 1163492100 + 37527876 = 34110^2 + 6126^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1201019976.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158220 + ... + 165636.

Almost surely, 2^1201019976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201019976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761849180).

1201019976 is an abundant number, since it is smaller than the sum of its proper divisors (2322678384).

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

1201019976 is a wasteful number, since it uses less digits than its factorization.

1201019976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7615 (or 7608 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 36.

The square root of 1201019976 is about 34655.7351097910. The cubic root of 1201019976 is about 1062.9595634292.

The spelling of 1201019976 in words is "one billion, two hundred one million, nineteen thousand, nine hundred seventy-six".