1905454097 has 2 divisors, whose sum is σ = 1905454098. Its totient is φ = 1905454096.

The previous prime is 1905454093. The next prime is 1905454123. The reversal of 1905454097 is 7904545091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1172994001 + 732460096 = 34249^2 + 27064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1905454097 - 2² = 1905454093 is a prime.

It is not a weakly prime, because it can be changed into another prime (1905454093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 952727048 + 952727049.

It is an arithmetic number, because the mean of its divisors is an integer number (952727049).

Almost surely, 2^1905454097 is an apocalyptic number.

It is an amenable number.

1905454097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1905454097 is an equidigital number, since it uses as much as digits as its factorization.

1905454097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 1905454097 is about 43651.5073851981. The cubic root of 1905454097 is about 1239.7463270973.

The spelling of 1905454097 in words is "one billion, nine hundred five million, four hundred fifty-four thousand, ninety-seven".