1977263212 has 12 divisors (see below), whose sum is σ = 3544606296. Its totient is φ = 964518560.

The previous prime is 1977263203. The next prime is 1977263219. The reversal of 1977263212 is 2123627791.

It is not an unprimeable number, because it can be changed into a prime (1977263219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6028078 + ... + 6028405.

It is an arithmetic number, because the mean of its divisors is an integer number (295383858).

Almost surely, 2^1977263212 is an apocalyptic number.

It is an amenable number.

1977263212 is a deficient number, since it is larger than the sum of its proper divisors (1567343084).

1977263212 is a wasteful number, since it uses less digits than its factorization.

1977263212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12056528 (or 12056526 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 1977263212 is about 44466.4279203986. The cubic root of 1977263212 is about 1255.1284159321.

The spelling of 1977263212 in words is "one billion, nine hundred seventy-seven million, two hundred sixty-three thousand, two hundred twelve".