1986736051 has 8 divisors (see below), whose sum is σ = 2014689600. Its totient is φ = 1958977728.

The previous prime is 1986736043. The next prime is 1986736061. The reversal of 1986736051 is 1506376891.

It is a happy number.

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 1986736051 - 2³ = 1986736043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1986735992 and 1986736010.

It is not an unprimeable number, because it can be changed into a prime (1986736061) 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, 28251 + ... + 69076.

It is an arithmetic number, because the mean of its divisors is an integer number (251836200).

Almost surely, 2^1986736051 is an apocalyptic number.

1986736051 is a deficient number, since it is larger than the sum of its proper divisors (27953549).

1986736051 is a wasteful number, since it uses less digits than its factorization.

1986736051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97613.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1986736051 is about 44572.8174002945. The cubic root of 1986736051 is about 1257.1296151037.

The spelling of 1986736051 in words is "one billion, nine hundred eighty-six million, seven hundred thirty-six thousand, fifty-one".