1601398 has 16 divisors (see below), whose sum is σ = 2589696. Its totient is φ = 740520.

The previous prime is 1601389. The next prime is 1601399. The reversal of 1601398 is 8931061.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865 + ... + 1987.

It is an arithmetic number, because the mean of its divisors is an integer number (161856).

2^1601398 is an apocalyptic number.

1601398 is a deficient number, since it is larger than the sum of its proper divisors (988298).

1601398 is a wasteful number, since it uses less digits than its factorization.

1601398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1601398 is about 1265.4635514309. The cubic root of 1601398 is about 116.9947644186.

The spelling of 1601398 in words is "one million, six hundred one thousand, three hundred ninety-eight".