2051387686 has 8 divisors (see below), whose sum is σ = 3152132424. Its totient is φ = 1000676880.

The previous prime is 2051387683. The next prime is 2051387711. The reversal of 2051387686 is 6867831502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051387683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12508380 + ... + 12508543.

It is an arithmetic number, because the mean of its divisors is an integer number (394016553).

Almost surely, 2^2051387686 is an apocalyptic number.

2051387686 is a deficient number, since it is larger than the sum of its proper divisors (1100744738).

2051387686 is a wasteful number, since it uses less digits than its factorization.

2051387686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25016966.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2051387686 is about 45292.2475264807. The cubic root of 2051387686 is about 1270.6206663044.

The spelling of 2051387686 in words is "two billion, fifty-one million, three hundred eighty-seven thousand, six hundred eighty-six".