1250990198 has 4 divisors (see below), whose sum is σ = 1876485300. Its totient is φ = 625495098.

The previous prime is 1250990189. The next prime is 1250990231. The reversal of 1250990198 is 8910990521.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 312747548 + ... + 312747551.

It is an arithmetic number, because the mean of its divisors is an integer number (469121325).

Almost surely, 2^1250990198 is an apocalyptic number.

1250990198 is a deficient number, since it is larger than the sum of its proper divisors (625495102).

1250990198 is an equidigital number, since it uses as much as digits as its factorization.

1250990198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625495101.

The product of its (nonzero) digits is 58320, while the sum is 44.

The square root of 1250990198 is about 35369.3398015852. The cubic root of 1250990198 is about 1077.5017121974.

The spelling of 1250990198 in words is "one billion, two hundred fifty million, nine hundred ninety thousand, one hundred ninety-eight".