2193658542 has 48 divisors (see below), whose sum is σ = 5021490240. Its totient is φ = 690975936.

The previous prime is 2193658501. The next prime is 2193658567. The reversal of 2193658542 is 2458563912.

2193658542 is a `hidden beast` number, since 21 + 9 + 3 + 6 + 585 + 42 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20173 + ... + 69240.

It is an arithmetic number, because the mean of its divisors is an integer number (104614380).

Almost surely, 2^2193658542 is an apocalyptic number.

2193658542 is an abundant number, since it is smaller than the sum of its proper divisors (2827831698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2193658542 is a wasteful number, since it uses less digits than its factorization.

2193658542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89497 (or 89494 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 2193658542 is about 46836.5086444325. The cubic root of 2193658542 is about 1299.3406008952.

The spelling of 2193658542 in words is "two billion, one hundred ninety-three million, six hundred fifty-eight thousand, five hundred forty-two".