791806145 has 16 divisors (see below), whose sum is σ = 1048218192. Its totient is φ = 570455040.

The previous prime is 791806121. The next prime is 791806151. The reversal of 791806145 is 541608197.

It can be written as a sum of positive squares in 8 ways, for example, as 185858689 + 605947456 = 13633^2 + 24616^2 .

It is not a de Polignac number, because 791806145 - 2¹⁰ = 791805121 is a prime.

It is a super-2 number, since 2×791806145² = 1253913942519522050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145892 + ... + 151221.

It is an arithmetic number, because the mean of its divisors is an integer number (65513637).

Almost surely, 2^791806145 is an apocalyptic number.

It is an amenable number.

791806145 is a deficient number, since it is larger than the sum of its proper divisors (256412047).

791806145 is a wasteful number, since it uses less digits than its factorization.

791806145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297172.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 791806145 is about 28139.0501794215. The cubic root of 791806145 is about 925.1375086539.

The spelling of 791806145 in words is "seven hundred ninety-one million, eight hundred six thousand, one hundred forty-five".