1611416220 has 48 divisors (see below), whose sum is σ = 4749440640. Its totient is φ = 407094336.

The previous prime is 1611416189. The next prime is 1611416221. The reversal of 1611416220 is 226141161.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611416221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705622 + ... + 707901.

It is an arithmetic number, because the mean of its divisors is an integer number (98946680).

Almost surely, 2^1611416220 is an apocalyptic number.

1611416220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1611416220 is an abundant number, since it is smaller than the sum of its proper divisors (3138024420).

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

1611416220 is a wasteful number, since it uses less digits than its factorization.

1611416220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413554 (or 1413552 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1611416220 is about 40142.4491031626. The cubic root of 1611416220 is about 1172.3822744339.

Adding to 1611416220 its reverse (226141161), we get a palindrome (1837557381).

The spelling of 1611416220 in words is "one billion, six hundred eleven million, four hundred sixteen thousand, two hundred twenty".