1988525700 has 360 divisors, whose sum is σ = 7804000512. Its totient is φ = 427576320.

The previous prime is 1988525699. The next prime is 1988525753. The reversal of 1988525700 is 75258891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 962869 + ... + 964931.

Almost surely, 2^1988525700 is an apocalyptic number.

1988525700 is a gapful number since it is divisible by the number (10) 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 1988525700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3902000256).

1988525700 is an abundant number, since it is smaller than the sum of its proper divisors (5815474812).

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

1988525700 is a wasteful number, since it uses less digits than its factorization.

1988525700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113 (or 2097 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 45.

The square root of 1988525700 is about 44592.8884464777. Note that the first 3 decimals coincide. The cubic root of 1988525700 is about 1257.5069753390.

The spelling of 1988525700 in words is "one billion, nine hundred eighty-eight million, five hundred twenty-five thousand, seven hundred".