2538993996 has 432 divisors, whose sum is σ = 8873504640. Its totient is φ = 602864640.

The previous prime is 2538993931. The next prime is 2538994027. The reversal of 2538993996 is 6993998352.

2538993996 is a `hidden beast` number, since 2 + 538 + 9 + 9 + 3 + 9 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 14184235 + ... + 14184413.

It is an arithmetic number, because the mean of its divisors is an integer number (20540520).

Almost surely, 2^2538993996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2538993996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4436752320).

2538993996 is an abundant number, since it is smaller than the sum of its proper divisors (6334510644).

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

2538993996 is a wasteful number, since it uses less digits than its factorization.

2538993996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 262 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 63.

The square root of 2538993996 is about 50388.4311722443. The cubic root of 2538993996 is about 1364.2288346243.

The spelling of 2538993996 in words is "two billion, five hundred thirty-eight million, nine hundred ninety-three thousand, nine hundred ninety-six".