1881598 has 16 divisors (see below), whose sum is σ = 2965824. Its totient is φ = 894240.

The previous prime is 1881587. The next prime is 1881601. The reversal of 1881598 is 8951881.

It is a super-2 number, since 2×1881598² = 7080822067208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1881598.

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, 3208 + ... + 3748.

It is an arithmetic number, because the mean of its divisors is an integer number (185364).

2^1881598 is an apocalyptic number.

1881598 is a deficient number, since it is larger than the sum of its proper divisors (1084226).

1881598 is a wasteful number, since it uses less digits than its factorization.

1881598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627.

The product of its digits is 23040, while the sum is 40.

The square root of 1881598 is about 1371.7135269436. The cubic root of 1881598 is about 123.4550749851.

The spelling of 1881598 in words is "one million, eight hundred eighty-one thousand, five hundred ninety-eight".