64188842 has 4 divisors (see below), whose sum is σ = 96283266. Its totient is φ = 32094420.

The previous prime is 64188823. The next prime is 64188853. The reversal of 64188842 is 24888146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24888146 = 2 ⋅12444073.

It can be written as a sum of positive squares in only one way, i.e., 53567761 + 10621081 = 7319^2 + 3259^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64188842.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16047209 + ... + 16047212.

Almost surely, 2^64188842 is an apocalyptic number.

64188842 is a deficient number, since it is larger than the sum of its proper divisors (32094424).

64188842 is a wasteful number, since it uses less digits than its factorization.

64188842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32094423.

The product of its digits is 98304, while the sum is 41.

The square root of 64188842 is about 8011.7939314488. The cubic root of 64188842 is about 400.3930345165.

The spelling of 64188842 in words is "sixty-four million, one hundred eighty-eight thousand, eight hundred forty-two".