891949198 has 16 divisors (see below), whose sum is σ = 1554123744. Its totient is φ = 375996960.

The previous prime is 891949187. The next prime is 891949211.

891949198 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521365 + ... + 523072.

It is an arithmetic number, because the mean of its divisors is an integer number (97132734).

Almost surely, 2^891949198 is an apocalyptic number.

891949198 is a deficient number, since it is larger than the sum of its proper divisors (662174546).

891949198 is a wasteful number, since it uses less digits than its factorization.

891949198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044507.

The product of its digits is 1679616, while the sum is 58.

The square root of 891949198 is about 29865.5185456406. The cubic root of 891949198 is about 962.6018820134.

The spelling of 891949198 in words is "eight hundred ninety-one million, nine hundred forty-nine thousand, one hundred ninety-eight".