5137881840 has 400 divisors, whose sum is σ = 21965135808. Its totient is φ = 1083912192.

The previous prime is 5137881829. The next prime is 5137881871. The reversal of 5137881840 is 481887315.

It is a happy number.

5137881840 is a `hidden beast` number, since 513 + 7 + 88 + 18 + 40 = 666.

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 79 ways as a sum of consecutive naturals, for example, 585324 + ... + 594036.

Almost surely, 2^5137881840 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 5137881840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10982567904).

5137881840 is an abundant number, since it is smaller than the sum of its proper divisors (16827253968).

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

5137881840 is a wasteful number, since it uses less digits than its factorization.

5137881840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8758 (or 8743 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The square root of 5137881840 is about 71679.0195245443. The cubic root of 5137881840 is about 1725.5519443598.

The spelling of 5137881840 in words is "five billion, one hundred thirty-seven million, eight hundred eighty-one thousand, eight hundred forty".