1899954 has 48 divisors (see below), whose sum is σ = 4987008. Its totient is φ = 510336.

The previous prime is 1899949. The next prime is 1899983. The reversal of 1899954 is 4599981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1699 + ... + 2585.

It is an arithmetic number, because the mean of its divisors is an integer number (103896).

2^1899954 is an apocalyptic number.

1899954 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1899954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2493504).

1899954 is an abundant number, since it is smaller than the sum of its proper divisors (3087054).

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

1899954 is a wasteful number, since it uses less digits than its factorization.

1899954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 916 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 1899954 is about 1378.3881891543. The cubic root of 1899954 is about 123.8552334134.

The spelling of 1899954 in words is "one million, eight hundred ninety-nine thousand, nine hundred fifty-four".