1901396 has 36 divisors (see below), whose sum is σ = 3950100. Its totient is φ = 798336.

The previous prime is 1901377. The next prime is 1901407. The reversal of 1901396 is 6931091.

It can be written as a sum of positive squares in 2 ways, for example, as 828100 + 1073296 = 910^2 + 1036^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17390 + ... + 17498.

It is an arithmetic number, because the mean of its divisors is an integer number (109725).

2^1901396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1901396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975050).

1901396 is an abundant number, since it is smaller than the sum of its proper divisors (2048704).

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

1901396 is a wasteful number, since it uses less digits than its factorization.

1901396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 1901396 is about 1378.9111646513. The cubic root of 1901396 is about 123.8865594494.

The spelling of 1901396 in words is "one million, nine hundred one thousand, three hundred ninety-six".