834251861 has 4 divisors (see below), whose sum is σ = 834685824. Its totient is φ = 833817900.

The previous prime is 834251851. The next prime is 834251893. The reversal of 834251861 is 168152438.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 834251861 - 2⁶ = 834251797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (834251851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214085 + ... + 217946.

It is an arithmetic number, because the mean of its divisors is an integer number (208671456).

Almost surely, 2^834251861 is an apocalyptic number.

It is an amenable number.

834251861 is a deficient number, since it is larger than the sum of its proper divisors (433963).

834251861 is a wasteful number, since it uses less digits than its factorization.

834251861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433962.

The product of its digits is 46080, while the sum is 38.

The square root of 834251861 is about 28883.4184438061. The cubic root of 834251861 is about 941.3816489786.

The spelling of 834251861 in words is "eight hundred thirty-four million, two hundred fifty-one thousand, eight hundred sixty-one".