1977806834 has 8 divisors (see below), whose sum is σ = 3002454000. Its totient is φ = 976988836.

The previous prime is 1977806827. The next prime is 1977806837. The reversal of 1977806834 is 4386087791.

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

It is not an unprimeable number, because it can be changed into a prime (1977806837) 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, 5957084 + ... + 5957415.

It is an arithmetic number, because the mean of its divisors is an integer number (375306750).

Almost surely, 2^1977806834 is an apocalyptic number.

1977806834 is a deficient number, since it is larger than the sum of its proper divisors (1024647166).

1977806834 is a wasteful number, since it uses less digits than its factorization.

1977806834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11914584.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 1977806834 is about 44472.5402242777. The cubic root of 1977806834 is about 1255.2434322999.

The spelling of 1977806834 in words is "one billion, nine hundred seventy-seven million, eight hundred six thousand, eight hundred thirty-four".