851944461 has 8 divisors (see below), whose sum is σ = 1136965824. Its totient is φ = 567443040.

The previous prime is 851944459. The next prime is 851944469. The reversal of 851944461 is 164449158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 851944461 - 2¹ = 851944459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851944469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126145 + ... + 132726.

It is an arithmetic number, because the mean of its divisors is an integer number (142120728).

Almost surely, 2^851944461 is an apocalyptic number.

It is an amenable number.

851944461 is a deficient number, since it is larger than the sum of its proper divisors (285021363).

851944461 is a wasteful number, since it uses less digits than its factorization.

851944461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259971.

The product of its digits is 138240, while the sum is 42.

The square root of 851944461 is about 29188.0876557544. The cubic root of 851944461 is about 947.9900110664.

The spelling of 851944461 in words is "eight hundred fifty-one million, nine hundred forty-four thousand, four hundred sixty-one".