1591007040 has 168 divisors, whose sum is σ = 6254252160. Its totient is φ = 363654144.

The previous prime is 1591007029. The next prime is 1591007059. The reversal of 1591007040 is 407001951.

1591007040 is a `hidden beast` number, since 1 + 591 + 0 + 0 + 70 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a junction number, because it is equal to n+sod(n) for n = 1591006995 and 1591007013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19300 + ... + 59619.

Almost surely, 2^1591007040 is an apocalyptic number.

1591007040 is a gapful number since it is divisible by the number (10) 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 1591007040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3127126080).

1591007040 is an abundant number, since it is smaller than the sum of its proper divisors (4663245120).

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

1591007040 is a wasteful number, since it uses less digits than its factorization.

1591007040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78949 (or 78936 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 1591007040 is about 39887.4295988097. The cubic root of 1591007040 is about 1167.4116790678.

Adding to 1591007040 its reverse (407001951), we get a palindrome (1998008991).

The spelling of 1591007040 in words is "one billion, five hundred ninety-one million, seven thousand, forty".