1201819080 has 384 divisors, whose sum is σ = 4848958080. Its totient is φ = 234823680.

The previous prime is 1201819079. The next prime is 1201819081. The reversal of 1201819080 is 809181021.

It is an interprime number because it is at equal distance from previous prime (1201819079) and next prime (1201819081).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1201819081) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1099014 + ... + 1100106.

It is an arithmetic number, because the mean of its divisors is an integer number (12627495).

Almost surely, 2^1201819080 is an apocalyptic number.

1201819080 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 1201819080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2424479040).

1201819080 is an abundant number, since it is smaller than the sum of its proper divisors (3647139000).

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

1201819080 is a wasteful number, since it uses less digits than its factorization.

1201819080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 1201819080 is about 34667.2623666767. The cubic root of 1201819080 is about 1063.1952594593.

The spelling of 1201819080 in words is "one billion, two hundred one million, eight hundred nineteen thousand, eighty".