5394851640 has 256 divisors, whose sum is σ = 19016640000. Its totient is φ = 1356632064.

The previous prime is 5394851633. The next prime is 5394851653. The reversal of 5394851640 is 461584935.

5394851640 is a `hidden beast` number, since 5 + 3 + 9 + 485 + 164 + 0 = 666.

It is a super-2 number, since 2×5394851640² = 58208848435221379200, 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 63 ways as a sum of consecutive naturals, for example, 5806696 + ... + 5807624.

It is an arithmetic number, because the mean of its divisors is an integer number (74283750).

Almost surely, 2^5394851640 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 5394851640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9508320000).

5394851640 is an abundant number, since it is smaller than the sum of its proper divisors (13621788360).

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

5394851640 is a wasteful number, since it uses less digits than its factorization.

5394851640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1241 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 5394851640 is about 73449.6537772643. The cubic root of 5394851640 is about 1753.8529139416.

The spelling of 5394851640 in words is "five billion, three hundred ninety-four million, eight hundred fifty-one thousand, six hundred forty".