281198490091 has 8 divisors (see below), whose sum is σ = 283166391024. Its totient is φ = 279236049120.

The previous prime is 281198490031. The next prime is 281198490121. The reversal of 281198490091 is 190094891182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 281198490091 - 2⁷ = 281198489963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281198490031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261600 + ... + 1467661.

It is an arithmetic number, because the mean of its divisors is an integer number (35395798878).

Almost surely, 2^281198490091 is an apocalyptic number.

281198490091 is a deficient number, since it is larger than the sum of its proper divisors (1967900933).

281198490091 is a wasteful number, since it uses less digits than its factorization.

281198490091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729981.

The product of its (nonzero) digits is 373248, while the sum is 52.

The spelling of 281198490091 in words is "two hundred eighty-one billion, one hundred ninety-eight million, four hundred ninety thousand, ninety-one".