1905498816 has 224 divisors, whose sum is σ = 5707806720. Its totient is φ = 557051904.

The previous prime is 1905498799. The next prime is 1905498817. The reversal of 1905498816 is 6188945091.

It is not an unprimeable number, because it can be changed into a prime (1905498817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4340325 + ... + 4340763.

It is an arithmetic number, because the mean of its divisors is an integer number (25481280).

Almost surely, 2^1905498816 is an apocalyptic number.

1905498816 is a gapful number since it is divisible by the number (16) 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 1905498816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2853903360).

1905498816 is an abundant number, since it is smaller than the sum of its proper divisors (3802307904).

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

1905498816 is a wasteful number, since it uses less digits than its factorization.

1905498816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 541 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 1905498816 is about 43652.0196096355. The cubic root of 1905498816 is about 1239.7560255348.

The spelling of 1905498816 in words is "one billion, nine hundred five million, four hundred ninety-eight thousand, eight hundred sixteen".