195491394 has 160 divisors (see below), whose sum is σ = 530804736. Its totient is φ = 52604640.

The previous prime is 195491371. The next prime is 195491423. The reversal of 195491394 is 493194591.

195491394 is a `hidden beast` number, since 1 + 9 + 549 + 13 + 94 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2355277 + ... + 2355359.

Almost surely, 2^195491394 is an apocalyptic number.

195491394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195491394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265402368).

195491394 is an abundant number, since it is smaller than the sum of its proper divisors (335313342).

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

195491394 is a wasteful number, since it uses less digits than its factorization.

195491394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 193 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 195491394 is about 13981.8237007910. The cubic root of 195491394 is about 580.3756919893.

The spelling of 195491394 in words is "one hundred ninety-five million, four hundred ninety-one thousand, three hundred ninety-four".