1611898152228 has 480 divisors, whose sum is σ = 5409026889728. Its totient is φ = 407138918400.

The previous prime is 1611898152223. The next prime is 1611898152269. The reversal of 1611898152228 is 8222518981161.

1611898152228 is a `hidden beast` number, since 1 + 6 + 1 + 1 + 8 + 98 + 1 + 522 + 28 = 666.

It is a super-2 number, since 2×1611898152228² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (1611898152223) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 88649298 + ... + 88667478.

Almost surely, 2^{1611898152228} is an apocalyptic number.

1611898152228 is a gapful number since it is divisible by the number (18) 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 1611898152228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2704513444864).

1611898152228 is an abundant number, since it is smaller than the sum of its proper divisors (3797128737500).

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

1611898152228 is a wasteful number, since it uses less digits than its factorization.

1611898152228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18345 (or 18334 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 54.

The spelling of 1611898152228 in words is "one trillion, six hundred eleven billion, eight hundred ninety-eight million, one hundred fifty-two thousand, two hundred twenty-eight".