1350581998 has 4 divisors (see below), whose sum is σ = 2025873000. Its totient is φ = 675290998.

The previous prime is 1350581993. The next prime is 1350582007. The reversal of 1350581998 is 8991850531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8991850531 = 46153 ⋅194827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350581993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337645498 + ... + 337645501.

It is an arithmetic number, because the mean of its divisors is an integer number (506468250).

Almost surely, 2^1350581998 is an apocalyptic number.

1350581998 is a deficient number, since it is larger than the sum of its proper divisors (675291002).

1350581998 is an equidigital number, since it uses as much as digits as its factorization.

1350581998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675291001.

The product of its (nonzero) digits is 388800, while the sum is 49.

The square root of 1350581998 is about 36750.2652779541. The cubic root of 1350581998 is about 1105.3682489198.

The spelling of 1350581998 in words is "one billion, three hundred fifty million, five hundred eighty-one thousand, nine hundred ninety-eight".