1982905616 has 10 divisors (see below), whose sum is σ = 3841879662. Its totient is φ = 991452800.

The previous prime is 1982905597. The next prime is 1982905637. The reversal of 1982905616 is 6165092891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1311888400 + 671017216 = 36220^2 + 25904^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61965785 + ... + 61965816.

Almost surely, 2^1982905616 is an apocalyptic number.

1982905616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1982905616 is a deficient number, since it is larger than the sum of its proper divisors (1858974046).

1982905616 is a wasteful number, since it uses less digits than its factorization.

1982905616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123931609 (or 123931603 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 1982905616 is about 44529.8283850275. The cubic root of 1982905616 is about 1256.3211783602.

The spelling of 1982905616 in words is "one billion, nine hundred eighty-two million, nine hundred five thousand, six hundred sixteen".