1201694880 has 192 divisors, whose sum is σ = 3946537728. Its totient is φ = 307077120.

The previous prime is 1201694873. The next prime is 1201694887. The reversal of 1201694880 is 884961021.

It is an interprime number because it is at equal distance from previous prime (1201694873) and next prime (1201694887).

It is not an unprimeable number, because it can be changed into a prime (1201694887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1260484 + ... + 1261436.

It is an arithmetic number, because the mean of its divisors is an integer number (20554884).

Almost surely, 2^1201694880 is an apocalyptic number.

1201694880 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 1201694880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1973268864).

1201694880 is an abundant number, since it is smaller than the sum of its proper divisors (2744842848).

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

1201694880 is a wasteful number, since it uses less digits than its factorization.

1201694880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 1201694880 is about 34665.4710050217. The cubic root of 1201694880 is about 1063.1586334806.

The spelling of 1201694880 in words is "one billion, two hundred one million, six hundred ninety-four thousand, eight hundred eighty".