1977249048 has 32 divisors (see below), whose sum is σ = 5058081600. Its totient is φ = 643755168.

The previous prime is 1977249011. The next prime is 1977249061. The reversal of 1977249048 is 8409427791.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 956938 + ... + 959001.

It is an arithmetic number, because the mean of its divisors is an integer number (158065050).

Almost surely, 2^1977249048 is an apocalyptic number.

It is an amenable number.

1977249048 is an abundant number, since it is smaller than the sum of its proper divisors (3080832552).

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

1977249048 is a wasteful number, since it uses less digits than its factorization.

1977249048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915991 (or 1915987 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 1977249048 is about 44466.2686538909. The cubic root of 1977249048 is about 1255.1254189140.

The spelling of 1977249048 in words is "one billion, nine hundred seventy-seven million, two hundred forty-nine thousand, forty-eight".