1980245828 has 48 divisors (see below), whose sum is σ = 3824963520. Its totient is φ = 896987520.

The previous prime is 1980245801. The next prime is 1980245879. The reversal of 1980245828 is 8285420891.

It is a super-2 number, since 2×1980245828² = 7842747078622811168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2304863 + ... + 2305721.

It is an arithmetic number, because the mean of its divisors is an integer number (79686740).

Almost surely, 2^1980245828 is an apocalyptic number.

It is an amenable number.

1980245828 is a deficient number, since it is larger than the sum of its proper divisors (1844717692).

1980245828 is a wasteful number, since it uses less digits than its factorization.

1980245828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1305 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 1980245828 is about 44499.9531235708. The cubic root of 1980245828 is about 1255.7592011698.

The spelling of 1980245828 in words is "one billion, nine hundred eighty million, two hundred forty-five thousand, eight hundred twenty-eight".