1977045818 has 8 divisors (see below), whose sum is σ = 3235165920. Its totient is φ = 898657180.

The previous prime is 1977045769. The next prime is 1977045841. The reversal of 1977045818 is 8185407791.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44932838 + ... + 44932881.

It is an arithmetic number, because the mean of its divisors is an integer number (404395740).

Almost surely, 2^1977045818 is an apocalyptic number.

1977045818 is a deficient number, since it is larger than the sum of its proper divisors (1258120102).

1977045818 is a wasteful number, since it uses less digits than its factorization.

1977045818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89865732.

The product of its (nonzero) digits is 564480, while the sum is 50.

The square root of 1977045818 is about 44463.9833798098. The cubic root of 1977045818 is about 1255.0824150784.

The spelling of 1977045818 in words is "one billion, nine hundred seventy-seven million, forty-five thousand, eight hundred eighteen".