2136493777 has 8 divisors (see below), whose sum is σ = 2332503360. Its totient is φ = 1940781360.

The previous prime is 2136493769. The next prime is 2136493783. The reversal of 2136493777 is 7773946312.

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 2136493777 - 2³ = 2136493769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2136493777.

It is not an unprimeable number, because it can be changed into a prime (2136493727) 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, 59118 + ... + 88135.

It is an arithmetic number, because the mean of its divisors is an integer number (291562920).

Almost surely, 2^2136493777 is an apocalyptic number.

It is an amenable number.

2136493777 is a deficient number, since it is larger than the sum of its proper divisors (196009583).

2136493777 is a wasteful number, since it uses less digits than its factorization.

2136493777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148583.

The product of its digits is 1333584, while the sum is 49.

The square root of 2136493777 is about 46222.2216796207. The cubic root of 2136493777 is about 1287.9545688954.

The spelling of 2136493777 in words is "two billion, one hundred thirty-six million, four hundred ninety-three thousand, seven hundred seventy-seven".