1598667842 has 4 divisors (see below), whose sum is σ = 2398001766. Its totient is φ = 799333920.

The previous prime is 1598667817. The next prime is 1598667853. The reversal of 1598667842 is 2487668951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2487668951 = 199 ⋅12500849.

It can be written as a sum of positive squares in only one way, i.e., 1132928281 + 465739561 = 33659^2 + 21581^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399666959 + ... + 399666962.

Almost surely, 2^1598667842 is an apocalyptic number.

1598667842 is a deficient number, since it is larger than the sum of its proper divisors (799333924).

1598667842 is an equidigital number, since it uses as much as digits as its factorization.

1598667842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799333923.

The product of its digits is 5806080, while the sum is 56.

The square root of 1598667842 is about 39983.3445574529. The cubic root of 1598667842 is about 1169.2824006865.

The spelling of 1598667842 in words is "one billion, five hundred ninety-eight million, six hundred sixty-seven thousand, eight hundred forty-two".