1201079880 has 768 divisors, whose sum is σ = 5469811200. Its totient is φ = 228096000.

The previous prime is 1201079857. The next prime is 1201079881. The reversal of 1201079880 is 889701021.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201079881) by changing a digit.

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 191 ways as a sum of consecutive naturals, for example, 11891830 + ... + 11891930.

It is an arithmetic number, because the mean of its divisors is an integer number (7122150).

Almost surely, 2^1201079880 is an apocalyptic number.

1201079880 is a gapful number since it is divisible by the number (10) 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 1201079880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2734905600).

1201079880 is an abundant number, since it is smaller than the sum of its proper divisors (4268731320).

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

1201079880 is a wasteful number, since it uses less digits than its factorization.

1201079880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 1201079880 is about 34656.5993715483. The cubic root of 1201079880 is about 1062.9772357612.

The spelling of 1201079880 in words is "one billion, two hundred one million, seventy-nine thousand, eight hundred eighty".