1598791 has 2 divisors, whose sum is σ = 1598792. Its totient is φ = 1598790.

The previous prime is 1598789. The next prime is 1598801. The reversal of 1598791 is 1978951.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1598791 - 2¹ = 1598789 is a prime.

It is a super-2 number, since 2×1598791² = 5112265323362, which contains 22 as substring.

Together with 1598789, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1598711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 799395 + 799396.

It is an arithmetic number, because the mean of its divisors is an integer number (799396).

2^1598791 is an apocalyptic number.

1598791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1598791 is an equidigital number, since it uses as much as digits as its factorization.

1598791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 40.

The square root of 1598791 is about 1264.4330745437. The cubic root of 1598791 is about 116.9312426266.

The spelling of 1598791 in words is "one million, five hundred ninety-eight thousand, seven hundred ninety-one".