2051860407 has 40 divisors (see below), whose sum is σ = 3066888960. Its totient is φ = 1216851840.

The previous prime is 2051860399. The next prime is 2051860417. The reversal of 2051860407 is 7040681502.

It is not a de Polignac number, because 2051860407 - 2³ = 2051860399 is a prime.

It is a super-2 number, since 2×2051860407² = 8420262259628411298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051860417) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4760482 + ... + 4760912.

It is an arithmetic number, because the mean of its divisors is an integer number (76672224).

Almost surely, 2^2051860407 is an apocalyptic number.

2051860407 is a deficient number, since it is larger than the sum of its proper divisors (1015028553).

2051860407 is an frugal number, since it uses more digits than its factorization.

2051860407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 2051860407 is about 45297.4657900417. The cubic root of 2051860407 is about 1270.7182592565.

The spelling of 2051860407 in words is "two billion, fifty-one million, eight hundred sixty thousand, four hundred seven".