1909098 has 24 divisors (see below), whose sum is σ = 4200768. Its totient is φ = 626472.

The previous prime is 1909091. The next prime is 1909109. The reversal of 1909098 is 8909091.

It is not an unprimeable number, because it can be changed into a prime (1909091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (175032).

2^1909098 is an apocalyptic number.

1909098 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1909098 is an abundant number, since it is smaller than the sum of its proper divisors (2291670).

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

1909098 is a wasteful number, since it uses less digits than its factorization.

1909098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658 (or 1655 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 1909098 is about 1381.7011254247. The cubic root of 1909098 is about 124.0536101868.

The spelling of 1909098 in words is "one million, nine hundred nine thousand, ninety-eight".