1019920304 has 180 divisors, whose sum is σ = 2436656544. Its totient is φ = 410793984.

The previous prime is 1019920283. The next prime is 1019920313. The reversal of 1019920304 is 4030299101.

It is a happy number.

It is a super-2 number, since 2×1019920304² = 2080474853022904832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21700409 + ... + 21700455.

Almost surely, 2^1019920304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1019920304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1218328272).

1019920304 is an abundant number, since it is smaller than the sum of its proper divisors (1416736240).

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

1019920304 is a wasteful number, since it uses less digits than its factorization.

1019920304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1019920304 is about 31936.1911316926. The cubic root of 1019920304 is about 1006.5964919480.

It can be divided in two parts, 10199 and 20304, that added together give a palindrome (30503).

The spelling of 1019920304 in words is "one billion, nineteen million, nine hundred twenty thousand, three hundred four".