1000389552 has 40 divisors (see below), whose sum is σ = 2587376064. Its totient is φ = 333071424.

The previous prime is 1000389527. The next prime is 1000389557. The reversal of 1000389552 is 2559830001.

It is a super-3 number, since 3×1000389552³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1000389557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30583 + ... + 54185.

Almost surely, 2^1000389552 is an apocalyptic number.

1000389552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000389552 is an abundant number, since it is smaller than the sum of its proper divisors (1586986512).

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

1000389552 is a wasteful number, since it uses less digits than its factorization.

1000389552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24497 (or 24491 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1000389552 is about 31628.9353598884. The cubic root of 1000389552 is about 1000.1298338091.

The spelling of 1000389552 in words is "one billion, three hundred eighty-nine thousand, five hundred fifty-two".