405230019538 has 8 divisors (see below), whose sum is σ = 607903188732. Its totient is φ = 202595623296.

The previous prime is 405230019433. The next prime is 405230019553. The reversal of 405230019538 is 835910032504.

It can be written as a sum of positive squares in 2 ways, for example, as 370755556609 + 34474462929 = 608897^2 + 185673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×405230019538² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 405230019538.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9667095 + ... + 9708922.

Almost surely, 2^405230019538 is an apocalyptic number.

405230019538 is a deficient number, since it is larger than the sum of its proper divisors (202673169194).

405230019538 is a wasteful number, since it uses less digits than its factorization.

405230019538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19386476.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 405230019538 in words is "four hundred five billion, two hundred thirty million, nineteen thousand, five hundred thirty-eight".