2438991900 has 108 divisors (see below), whose sum is σ = 7851610312. Its totient is φ = 632810880.

The previous prime is 2438991889. The next prime is 2438991911. The reversal of 2438991900 is 91998342.

It is an interprime number because it is at equal distance from previous prime (2438991889) and next prime (2438991911).

It is a super-2 number, since 2×2438991900² = 11897362976531220000, which contains 22 as substring.

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 35 ways as a sum of consecutive naturals, for example, 3322 + ... + 69921.

Almost surely, 2^2438991900 is an apocalyptic number.

2438991900 is a gapful number since it is divisible by the number (20) 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 2438991900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3925805156).

2438991900 is an abundant number, since it is smaller than the sum of its proper divisors (5412618412).

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

2438991900 is a wasteful number, since it uses less digits than its factorization.

2438991900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73300 (or 73290 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 2438991900 is about 49386.1508927351. The cubic root of 2438991900 is about 1346.0776684721.

The spelling of 2438991900 in words is "two billion, four hundred thirty-eight million, nine hundred ninety-one thousand, nine hundred".