194153961 has 32 divisors (see below), whose sum is σ = 273715200. Its totient is φ = 122264640.

The previous prime is 194153959. The next prime is 194153969. The reversal of 194153961 is 169351491.

It is not a de Polignac number, because 194153961 - 2¹ = 194153959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194153969) 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, 1084570 + ... + 1084748.

It is an arithmetic number, because the mean of its divisors is an integer number (8553600).

Almost surely, 2^194153961 is an apocalyptic number.

It is an amenable number.

194153961 is a deficient number, since it is larger than the sum of its proper divisors (79561239).

194153961 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (194153960) it forms an eRAP, since the sums of their prime factors are consecutive (428 and 429).

194153961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429.

The product of its digits is 29160, while the sum is 39.

The square root of 194153961 is about 13933.9140588709. The cubic root of 194153961 is about 579.0491365973.

The spelling of 194153961 in words is "one hundred ninety-four million, one hundred fifty-three thousand, nine hundred sixty-one".