1201609080 has 160 divisors (see below), whose sum is σ = 4615791840. Its totient is φ = 274648320.

The previous prime is 1201609069. The next prime is 1201609081. The reversal of 1201609080 is 809061021.

It is a super-2 number, since 2×1201609080² = 2887728762276892800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201609081) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 3811 + ... + 49170.

It is an arithmetic number, because the mean of its divisors is an integer number (28848699).

Almost surely, 2^1201609080 is an apocalyptic number.

1201609080 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 1201609080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2307895920).

1201609080 is an abundant number, since it is smaller than the sum of its proper divisors (3414182760).

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

1201609080 is a wasteful number, since it uses less digits than its factorization.

1201609080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53011 (or 52998 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1201609080 is about 34664.2334402479. The cubic root of 1201609080 is about 1063.1333300020.

The spelling of 1201609080 in words is "one billion, two hundred one million, six hundred nine thousand, eighty".