194956971 has 16 divisors (see below), whose sum is σ = 284715648. Its totient is φ = 117680000.

The previous prime is 194956963. The next prime is 194956981. The reversal of 194956971 is 179659491.

It is a cyclic number.

It is not a de Polignac number, because 194956971 - 2³ = 194956963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194956961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3486 + ... + 20051.

It is an arithmetic number, because the mean of its divisors is an integer number (17794728).

Almost surely, 2^194956971 is an apocalyptic number.

194956971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

194956971 is a deficient number, since it is larger than the sum of its proper divisors (89758677).

194956971 is a wasteful number, since it uses less digits than its factorization.

194956971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23802.

The product of its digits is 612360, while the sum is 51.

The square root of 194956971 is about 13962.6992734213. The cubic root of 194956971 is about 579.8463435609.

The spelling of 194956971 in words is "one hundred ninety-four million, nine hundred fifty-six thousand, nine hundred seventy-one".