1988796450 has 24 divisors (see below), whose sum is σ = 4932215568. Its totient is φ = 530345680.

The previous prime is 1988796437. The next prime is 1988796473. The reversal of 1988796450 is 546978891.

It is a super-2 number, since 2×1988796450² = 7910622639065205000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6629172 + ... + 6629471.

It is an arithmetic number, because the mean of its divisors is an integer number (205508982).

Almost surely, 2^1988796450 is an apocalyptic number.

1988796450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1988796450 is an abundant number, since it is smaller than the sum of its proper divisors (2943419118).

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

1988796450 is a wasteful number, since it uses less digits than its factorization.

1988796450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13258658 (or 13258653 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 57.

The square root of 1988796450 is about 44595.9241411141. The cubic root of 1988796450 is about 1257.5640451843.

The spelling of 1988796450 in words is "one billion, nine hundred eighty-eight million, seven hundred ninety-six thousand, four hundred fifty".