1982154816 has 42 divisors (see below), whose sum is σ = 5681490542. Its totient is φ = 660718080.

The previous prime is 1982154761. The next prime is 1982154821. The reversal of 1982154816 is 6184512891.

It is a happy number.

1982154816 is a `hidden beast` number, since 1 + 98 + 2 + 1 + 548 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1410753600 + 571401216 = 37560^2 + 23904^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1720045 + ... + 1721196.

Almost surely, 2^1982154816 is an apocalyptic number.

1982154816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1982154816 is an abundant number, since it is smaller than the sum of its proper divisors (3699335726).

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

1982154816 is a wasteful number, since it uses less digits than its factorization.

1982154816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441259 (or 3441246 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1982154816 is about 44521.3972826550. The cubic root of 1982154816 is about 1256.1625954189.

The spelling of 1982154816 in words is "one billion, nine hundred eighty-two million, one hundred fifty-four thousand, eight hundred sixteen".