815396145 has 16 divisors (see below), whose sum is σ = 1305052800. Its totient is φ = 434738304.

The previous prime is 815396137. The next prime is 815396159. The reversal of 815396145 is 541693518.

815396145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 815396145 - 2³ = 815396137 is a prime.

It is a super-2 number, since 2×815396145² = 1329741746561722050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 815396097 and 815396106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54156 + ... + 67554.

It is an arithmetic number, because the mean of its divisors is an integer number (81565800).

Almost surely, 2^815396145 is an apocalyptic number.

It is an amenable number.

815396145 is a deficient number, since it is larger than the sum of its proper divisors (489656655).

815396145 is a wasteful number, since it uses less digits than its factorization.

815396145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17464.

The product of its digits is 129600, while the sum is 42.

The square root of 815396145 is about 28555.1421814005. The cubic root of 815396145 is about 934.2351815113.

The spelling of 815396145 in words is "eight hundred fifteen million, three hundred ninety-six thousand, one hundred forty-five".