1977344311 has 8 divisors (see below), whose sum is σ = 1982398880. Its totient is φ = 1972297728.

The previous prime is 1977344287. The next prime is 1977344333. The reversal of 1977344311 is 1134437791.

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

It is a cyclic number.

It is not a de Polignac number, because 1977344311 - 2¹⁵ = 1977311543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977344371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1111855 + ... + 1113631.

It is an arithmetic number, because the mean of its divisors is an integer number (247799860).

Almost surely, 2^1977344311 is an apocalyptic number.

1977344311 is a deficient number, since it is larger than the sum of its proper divisors (5054569).

1977344311 is a wasteful number, since it uses less digits than its factorization.

1977344311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3993.

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

The square root of 1977344311 is about 44467.3398237403. The cubic root of 1977344311 is about 1255.1455757227.

The spelling of 1977344311 in words is "one billion, nine hundred seventy-seven million, three hundred forty-four thousand, three hundred eleven".