264289138 has 8 divisors (see below), whose sum is σ = 402350832. Its totient is φ = 130172196.

The previous prime is 264289121. The next prime is 264289147. The reversal of 264289138 is 831982462.

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

It is a junction number, because it is equal to n+sod(n) for n = 264289094 and 264289103.

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, 986020 + ... + 986287.

It is an arithmetic number, because the mean of its divisors is an integer number (50293854).

Almost surely, 2^264289138 is an apocalyptic number.

264289138 is a deficient number, since it is larger than the sum of its proper divisors (138061694).

264289138 is a wasteful number, since it uses less digits than its factorization.

264289138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972376.

The product of its digits is 165888, while the sum is 43.

The square root of 264289138 is about 16256.9719812762. The cubic root of 264289138 is about 641.7409775372.

The spelling of 264289138 in words is "two hundred sixty-four million, two hundred eighty-nine thousand, one hundred thirty-eight".