1982505572 has 24 divisors (see below), whose sum is σ = 3489068352. Its totient is φ = 985644000.

The previous prime is 1982505559. The next prime is 1982505599. The reversal of 1982505572 is 2755052891.

It is a super-2 number, since 2×1982505572² = 7860656686022094368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 693947 + ... + 696797.

It is an arithmetic number, because the mean of its divisors is an integer number (145377848).

Almost surely, 2^1982505572 is an apocalyptic number.

It is an amenable number.

1982505572 is a deficient number, since it is larger than the sum of its proper divisors (1506562780).

1982505572 is a wasteful number, since it uses less digits than its factorization.

1982505572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779 (or 3777 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 1982505572 is about 44525.3362929467. The cubic root of 1982505572 is about 1256.2366866010.

The spelling of 1982505572 in words is "one billion, nine hundred eighty-two million, five hundred five thousand, five hundred seventy-two".