2851457238 has 48 divisors (see below), whose sum is σ = 7067563776. Its totient is φ = 813916080.

The previous prime is 2851457201. The next prime is 2851457249. The reversal of 2851457238 is 8327541582.

2851457238 is a `hidden beast` number, since 28 + 51 + 4 + 572 + 3 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2851457193 and 2851457202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127095 + ... + 147837.

It is an arithmetic number, because the mean of its divisors is an integer number (147240912).

Almost surely, 2^2851457238 is an apocalyptic number.

2851457238 is an abundant number, since it is smaller than the sum of its proper divisors (4216106538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2851457238 is a wasteful number, since it uses less digits than its factorization.

2851457238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21849 (or 21846 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 2851457238 is about 53399.0378003200. The cubic root of 2851457238 is about 1418.0415436858.

The spelling of 2851457238 in words is "two billion, eight hundred fifty-one million, four hundred fifty-seven thousand, two hundred thirty-eight".