409258197965 has 16 divisors (see below), whose sum is σ = 520992969408. Its totient is φ = 307558123776.

The previous prime is 409258197919. The next prime is 409258197967. The reversal of 409258197965 is 569791852904.

It is a cyclic number.

It is not a de Polignac number, because 409258197965 - 2²⁸ = 408989762509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409258197967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4558607 + ... + 4647516.

It is an arithmetic number, because the mean of its divisors is an integer number (32562060588).

Almost surely, 2^409258197965 is an apocalyptic number.

It is an amenable number.

409258197965 is a deficient number, since it is larger than the sum of its proper divisors (111734771443).

409258197965 is a wasteful number, since it uses less digits than its factorization.

409258197965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206668.

The product of its (nonzero) digits is 48988800, while the sum is 65.

The spelling of 409258197965 in words is "four hundred nine billion, two hundred fifty-eight million, one hundred ninety-seven thousand, nine hundred sixty-five".