1220061486 has 48 divisors (see below), whose sum is σ = 2844958464. Its totient is φ = 347797296.

The previous prime is 1220061481. The next prime is 1220061509. The reversal of 1220061486 is 6841600221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220061481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131641 + ... + 140603.

It is an arithmetic number, because the mean of its divisors is an integer number (59269968).

Almost surely, 2^1220061486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220061486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1422479232).

1220061486 is an abundant number, since it is smaller than the sum of its proper divisors (1624896978).

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

1220061486 is a wasteful number, since it uses less digits than its factorization.

1220061486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445 (or 9438 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1220061486 is about 34929.3785515861. The cubic root of 1220061486 is about 1068.5476805629.

The spelling of 1220061486 in words is "one billion, two hundred twenty million, sixty-one thousand, four hundred eighty-six".