194155283947 has 2 divisors, whose sum is σ = 194155283948. Its totient is φ = 194155283946.

The previous prime is 194155283897. The next prime is 194155283977. The reversal of 194155283947 is 749382551491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194155283947 - 2¹⁵ = 194155251179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194155283891 and 194155283900.

It is not a weakly prime, because it can be changed into another prime (194155283977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97077641973 + 97077641974.

It is an arithmetic number, because the mean of its divisors is an integer number (97077641974).

Almost surely, 2^194155283947 is an apocalyptic number.

194155283947 is a deficient number, since it is larger than the sum of its proper divisors (1).

194155283947 is an equidigital number, since it uses as much as digits as its factorization.

194155283947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 58.

The spelling of 194155283947 in words is "one hundred ninety-four billion, one hundred fifty-five million, two hundred eighty-three thousand, nine hundred forty-seven".