1591098 has 32 divisors (see below), whose sum is σ = 3551040. Its totient is φ = 472320.

The previous prime is 1591097. The next prime is 1591099. The reversal of 1591098 is 8901951.

It is an interprime number because it is at equal distance from previous prime (1591097) and next prime (1591099).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1591097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1528 + ... + 2348.

It is an arithmetic number, because the mean of its divisors is an integer number (110970).

2^1591098 is an apocalyptic number.

1591098 is an abundant number, since it is smaller than the sum of its proper divisors (1959942).

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

1591098 is a wasteful number, since it uses less digits than its factorization.

1591098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1591098 is about 1261.3873314728. The cubic root of 1591098 is about 116.7433926139.

The spelling of 1591098 in words is "one million, five hundred ninety-one thousand, ninety-eight".