1001398194 has 32 divisors (see below), whose sum is σ = 2227656000. Its totient is φ = 333450432.

The previous prime is 1001398183. The next prime is 1001398199. The reversal of 1001398194 is 4918931001.

It is not an unprimeable number, because it can be changed into a prime (1001398199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45297 + ... + 63675.

It is an arithmetic number, because the mean of its divisors is an integer number (69614250).

Almost surely, 2^1001398194 is an apocalyptic number.

1001398194 is an abundant number, since it is smaller than the sum of its proper divisors (1226257806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001398194 is a wasteful number, since it uses less digits than its factorization.

1001398194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19399 (or 19393 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 1001398194 is about 31644.8762677309. The cubic root of 1001398194 is about 1000.4658476190.

The spelling of 1001398194 in words is "one billion, one million, three hundred ninety-eight thousand, one hundred ninety-four".