1864748438 has 8 divisors (see below), whose sum is σ = 3196711632. Its totient is φ = 799177896.

The previous prime is 1864748423. The next prime is 1864748447. The reversal of 1864748438 is 8348474681.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1864748438.

It is a congruent number.

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, 66598145 + ... + 66598172.

It is an arithmetic number, because the mean of its divisors is an integer number (399588954).

Almost surely, 2^1864748438 is an apocalyptic number.

1864748438 is a deficient number, since it is larger than the sum of its proper divisors (1331963194).

1864748438 is a wasteful number, since it uses less digits than its factorization.

1864748438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133196326.

The product of its digits is 4128768, while the sum is 53.

The square root of 1864748438 is about 43182.7331001640. The cubic root of 1864748438 is about 1230.8545932667.

The spelling of 1864748438 in words is "one billion, eight hundred sixty-four million, seven hundred forty-eight thousand, four hundred thirty-eight".