190891426 has 8 divisors (see below), whose sum is σ = 312367824. Its totient is φ = 86768820.

The previous prime is 190891417. The next prime is 190891511. The reversal of 190891426 is 624198091.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4338420 + ... + 4338463.

It is an arithmetic number, because the mean of its divisors is an integer number (39045978).

Almost surely, 2^190891426 is an apocalyptic number.

190891426 is a deficient number, since it is larger than the sum of its proper divisors (121476398).

190891426 is a wasteful number, since it uses less digits than its factorization.

190891426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8676896.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 190891426 is about 13816.3463332388. The cubic root of 190891426 is about 575.7873785228.

The spelling of 190891426 in words is "one hundred ninety million, eight hundred ninety-one thousand, four hundred twenty-six".