1591117058 has 4 divisors (see below), whose sum is σ = 2386675590. Its totient is φ = 795558528.

The previous prime is 1591117051. The next prime is 1591117061. The reversal of 1591117058 is 8507111951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1555750249 + 35366809 = 39443^2 + 5947^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1591117051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397779263 + ... + 397779266.

Almost surely, 2^1591117058 is an apocalyptic number.

1591117058 is a deficient number, since it is larger than the sum of its proper divisors (795558532).

1591117058 is an equidigital number, since it uses as much as digits as its factorization.

1591117058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795558531.

The product of its (nonzero) digits is 12600, while the sum is 38.

The square root of 1591117058 is about 39888.8086811326. The cubic root of 1591117058 is about 1167.4385872533.

The spelling of 1591117058 in words is "one billion, five hundred ninety-one million, one hundred seventeen thousand, fifty-eight".