1198491026 has 4 divisors (see below), whose sum is σ = 1797736542. Its totient is φ = 599245512.

The previous prime is 1198491017. The next prime is 1198491029. The reversal of 1198491026 is 6201948911.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1152942025 + 45549001 = 33955^2 + 6749^2 .

It is not an unprimeable number, because it can be changed into a prime (1198491029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 299622755 + ... + 299622758.

Almost surely, 2^1198491026 is an apocalyptic number.

1198491026 is a deficient number, since it is larger than the sum of its proper divisors (599245516).

1198491026 is an equidigital number, since it uses as much as digits as its factorization.

1198491026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599245515.

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 1198491026 is about 34619.2291364207. The cubic root of 1198491026 is about 1062.2129589732.

The spelling of 1198491026 in words is "one billion, one hundred ninety-eight million, four hundred ninety-one thousand, twenty-six".