1938999552 has 288 divisors, whose sum is σ = 6373355520. Its totient is φ = 510935040.

The previous prime is 1938999493. The next prime is 1938999553. The reversal of 1938999552 is 2559998391.

It is not an unprimeable number, because it can be changed into a prime (1938999553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4187673 + ... + 4188135.

Almost surely, 2^1938999552 is an apocalyptic number.

1938999552 is a gapful number since it is divisible by the number (12) 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 1938999552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3186677760).

1938999552 is an abundant number, since it is smaller than the sum of its proper divisors (4434355968).

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

1938999552 is a wasteful number, since it uses less digits than its factorization.

1938999552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 535 counting only the distinct ones).

The product of its digits is 7873200, while the sum is 60.

The square root of 1938999552 is about 44034.0726256384. The cubic root of 1938999552 is about 1246.9792771603.

The spelling of 1938999552 in words is "one billion, nine hundred thirty-eight million, nine hundred ninety-nine thousand, five hundred fifty-two".