194902951 has 2 divisors, whose sum is σ = 194902952. Its totient is φ = 194902950.

The previous prime is 194902907. The next prime is 194902987. The reversal of 194902951 is 159209491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194902951 - 2²¹ = 192805799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194902651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97451475 + 97451476.

It is an arithmetic number, because the mean of its divisors is an integer number (97451476).

Almost surely, 2^194902951 is an apocalyptic number.

194902951 is a deficient number, since it is larger than the sum of its proper divisors (1).

194902951 is an equidigital number, since it uses as much as digits as its factorization.

194902951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 194902951 is about 13960.7646996860. The cubic root of 194902951 is about 579.7927826942.

The spelling of 194902951 in words is "one hundred ninety-four million, nine hundred two thousand, nine hundred fifty-one".