1980539904 has 176 divisors, whose sum is σ = 6229692416. Its totient is φ = 547430400.

The previous prime is 1980539893. The next prime is 1980539923. The reversal of 1980539904 is 4099350891.

It is a super-2 number, since 2×1980539904² = 7845076622672658432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 665139 + ... + 668109.

Almost surely, 2^1980539904 is an apocalyptic number.

1980539904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1980539904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3114846208).

1980539904 is an abundant number, since it is smaller than the sum of its proper divisors (4249152512).

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

1980539904 is a wasteful number, since it uses less digits than its factorization.

1980539904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032 (or 3014 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 1980539904 is about 44503.2572291063. The cubic root of 1980539904 is about 1255.8213601804.

The spelling of 1980539904 in words is "one billion, nine hundred eighty million, five hundred thirty-nine thousand, nine hundred four".