2051377986 has 32 divisors (see below), whose sum is σ = 4699035648. Its totient is φ = 584836560.

The previous prime is 2051377963. The next prime is 2051377987. The reversal of 2051377986 is 6897731502.

It is not an unprimeable number, because it can be changed into a prime (2051377987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33300 + ... + 72191.

It is an arithmetic number, because the mean of its divisors is an integer number (146844864).

Almost surely, 2^2051377986 is an apocalyptic number.

2051377986 is an abundant number, since it is smaller than the sum of its proper divisors (2647657662).

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

2051377986 is a wasteful number, since it uses less digits than its factorization.

2051377986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105966.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 2051377986 is about 45292.1404440108. The cubic root of 2051377986 is about 1270.6186635886.

The spelling of 2051377986 in words is "two billion, fifty-one million, three hundred seventy-seven thousand, nine hundred eighty-six".