1901815830 has 96 divisors (see below), whose sum is σ = 5218668000. Its totient is φ = 479195136.

The previous prime is 1901815829. The next prime is 1901815843. The reversal of 1901815830 is 385181091.

1901815830 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

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, 766552 + ... + 769028.

It is an arithmetic number, because the mean of its divisors is an integer number (54361125).

Almost surely, 2^1901815830 is an apocalyptic number.

1901815830 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 1901815830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2609334000).

1901815830 is an abundant number, since it is smaller than the sum of its proper divisors (3316852170).

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

1901815830 is a wasteful number, since it uses less digits than its factorization.

1901815830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958 (or 2955 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 1901815830 is about 43609.8134598166. The cubic root of 1901815830 is about 1238.9567686745.

The spelling of 1901815830 in words is "one billion, nine hundred one million, eight hundred fifteen thousand, eight hundred thirty".