1977963723 has 12 divisors (see below), whose sum is σ = 2934277008. Its totient is φ = 1283003280.

The previous prime is 1977963677. The next prime is 1977963727. The reversal of 1977963723 is 3273697791.

It is a happy number.

It is not a de Polignac number, because 1977963723 - 2¹⁶ = 1977898187 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1977963723.

It is not an unprimeable number, because it can be changed into a prime (1977963727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2969583 + ... + 2970248.

It is an arithmetic number, because the mean of its divisors is an integer number (244523084).

Almost surely, 2^1977963723 is an apocalyptic number.

1977963723 is a deficient number, since it is larger than the sum of its proper divisors (956313285).

1977963723 is a wasteful number, since it uses less digits than its factorization.

1977963723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5939874 (or 5939871 counting only the distinct ones).

The product of its digits is 3000564, while the sum is 54.

The square root of 1977963723 is about 44474.3040754996. The cubic root of 1977963723 is about 1255.2766220392.

The spelling of 1977963723 in words is "one billion, nine hundred seventy-seven million, nine hundred sixty-three thousand, seven hundred twenty-three".