1977316226 has 16 divisors (see below), whose sum is σ = 3036545280. Its totient is φ = 965238240.

The previous prime is 1977316217. The next prime is 1977316259. The reversal of 1977316226 is 6226137791.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12731 + ... + 64161.

It is an arithmetic number, because the mean of its divisors is an integer number (189784080).

Almost surely, 2^1977316226 is an apocalyptic number.

1977316226 is a deficient number, since it is larger than the sum of its proper divisors (1059229054).

1977316226 is a wasteful number, since it uses less digits than its factorization.

1977316226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51889.

The product of its digits is 190512, while the sum is 44.

The square root of 1977316226 is about 44467.0240290488. The cubic root of 1977316226 is about 1255.1396332523.

The spelling of 1977316226 in words is "one billion, nine hundred seventy-seven million, three hundred sixteen thousand, two hundred twenty-six".