2051860387 has 8 divisors (see below), whose sum is σ = 2070617600. Its totient is φ = 2033144064.

The previous prime is 2051860367. The next prime is 2051860399. The reversal of 2051860387 is 7830681502.

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

It is a cyclic number.

It is not a de Polignac number, because 2051860387 - 2¹¹ = 2051858339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051860367) 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, 95539 + ... + 115027.

It is an arithmetic number, because the mean of its divisors is an integer number (258827200).

Almost surely, 2^2051860387 is an apocalyptic number.

2051860387 is a deficient number, since it is larger than the sum of its proper divisors (18757213).

2051860387 is a wasteful number, since it uses less digits than its factorization.

2051860387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20445.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 2051860387 is about 45297.4655692788. The cubic root of 2051860387 is about 1270.7182551278.

The spelling of 2051860387 in words is "two billion, fifty-one million, eight hundred sixty thousand, three hundred eighty-seven".