194891494 has 16 divisors (see below), whose sum is σ = 340404768. Its totient is φ = 81948672.

The previous prime is 194891467. The next prime is 194891507. The reversal of 194891494 is 494198491.

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, 130587 + ... + 132070.

It is an arithmetic number, because the mean of its divisors is an integer number (21275298).

Almost surely, 2^194891494 is an apocalyptic number.

194891494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

194891494 is a deficient number, since it is larger than the sum of its proper divisors (145513274).

194891494 is a wasteful number, since it uses less digits than its factorization.

194891494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262719.

The product of its digits is 373248, while the sum is 49.

The square root of 194891494 is about 13960.3543651298. The cubic root of 194891494 is about 579.7814217989.

The spelling of 194891494 in words is "one hundred ninety-four million, eight hundred ninety-one thousand, four hundred ninety-four".