1977482388 has 96 divisors (see below), whose sum is σ = 5339980800. Its totient is φ = 557899776.

The previous prime is 1977482383. The next prime is 1977482411. The reversal of 1977482388 is 8832847791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1977482383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3000403 + ... + 3001061.

It is an arithmetic number, because the mean of its divisors is an integer number (55624800).

Almost surely, 2^1977482388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1977482388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2669990400).

1977482388 is an abundant number, since it is smaller than the sum of its proper divisors (3362498412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1977482388 is a wasteful number, since it uses less digits than its factorization.

1977482388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1067 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 57.

The square root of 1977482388 is about 44468.8923630891. The cubic root of 1977482388 is about 1255.1747904462.

The spelling of 1977482388 in words is "one billion, nine hundred seventy-seven million, four hundred eighty-two thousand, three hundred eighty-eight".