1906011198 has 192 divisors, whose sum is σ = 5276928384. Its totient is φ = 483840000.

The previous prime is 1906011193. The next prime is 1906011199. The reversal of 1906011198 is 8911106091.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906011193) 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, 6782818 + ... + 6783098.

It is an arithmetic number, because the mean of its divisors is an integer number (27484002).

Almost surely, 2^1906011198 is an apocalyptic number.

1906011198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1906011198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2638464192).

1906011198 is an abundant number, since it is smaller than the sum of its proper divisors (3370917186).

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

1906011198 is a wasteful number, since it uses less digits than its factorization.

1906011198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 36.

The square root of 1906011198 is about 43657.8881532307. Note that the first 3 decimals coincide. The cubic root of 1906011198 is about 1239.8671376031.

The spelling of 1906011198 in words is "one billion, nine hundred six million, eleven thousand, one hundred ninety-eight".