1898940 has 24 divisors (see below), whose sum is σ = 5317200. Its totient is φ = 506368.

The previous prime is 1898921. The next prime is 1898959. The reversal of 1898940 is 498981.

It is an interprime number because it is at equal distance from previous prime (1898921) and next prime (1898959).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15765 + ... + 15884.

It is an arithmetic number, because the mean of its divisors is an integer number (221550).

2^1898940 is an apocalyptic number.

1898940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1898940 is an abundant number, since it is smaller than the sum of its proper divisors (3418260).

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

1898940 is a wasteful number, since it uses less digits than its factorization.

1898940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31661 (or 31659 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 1898940 is about 1378.0203191535. The cubic root of 1898940 is about 123.8331957649.

The spelling of 1898940 in words is "one million, eight hundred ninety-eight thousand, nine hundred forty".