194738505 has 32 divisors (see below), whose sum is σ = 353216640. Its totient is φ = 90823680.

The previous prime is 194738503. The next prime is 194738507. The reversal of 194738505 is 505837491.

It is an interprime number because it is at equal distance from previous prime (194738503) and next prime (194738507).

It is not a de Polignac number, because 194738505 - 2¹ = 194738503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194738503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22576 + ... + 29985.

It is an arithmetic number, because the mean of its divisors is an integer number (11038020).

Almost surely, 2^194738505 is an apocalyptic number.

194738505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194738505 is a deficient number, since it is larger than the sum of its proper divisors (158478135).

194738505 is a wasteful number, since it uses less digits than its factorization.

194738505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52601.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 194738505 is about 13954.8738797597. The cubic root of 194738505 is about 579.6296734286.

The spelling of 194738505 in words is "one hundred ninety-four million, seven hundred thirty-eight thousand, five hundred five".