1618198350 has 96 divisors (see below), whose sum is σ = 4210444800. Its totient is φ = 410509440.

The previous prime is 1618198349. The next prime is 1618198381. The reversal of 1618198350 is 538918161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 685372 + ... + 687728.

It is an arithmetic number, because the mean of its divisors is an integer number (43858800).

Almost surely, 2^1618198350 is an apocalyptic number.

1618198350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1618198350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2105222400).

1618198350 is an abundant number, since it is smaller than the sum of its proper divisors (2592246450).

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

1618198350 is a wasteful number, since it uses less digits than its factorization.

1618198350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594 (or 2589 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 1618198350 is about 40226.8361917763. The cubic root of 1618198350 is about 1174.0247468197.

The spelling of 1618198350 in words is "one billion, six hundred eighteen million, one hundred ninety-eight thousand, three hundred fifty".