338191487 has 8 divisors (see below), whose sum is σ = 341300496. Its totient is φ = 335092032.

The previous prime is 338191457. The next prime is 338191499. The reversal of 338191487 is 784191833.

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

It is a cyclic number.

It is not a de Polignac number, because 338191487 - 2⁶ = 338191423 is a prime.

It is a super-2 number, since 2×338191487² = 228746963758542338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338191457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81968 + ... + 85994.

It is an arithmetic number, because the mean of its divisors is an integer number (42662562).

Almost surely, 2^338191487 is an apocalyptic number.

338191487 is a deficient number, since it is larger than the sum of its proper divisors (3109009).

338191487 is a wasteful number, since it uses less digits than its factorization.

338191487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777.

The product of its digits is 145152, while the sum is 44.

The square root of 338191487 is about 18389.9833333258. The cubic root of 338191487 is about 696.7134967210.

The spelling of 338191487 in words is "three hundred thirty-eight million, one hundred ninety-one thousand, four hundred eighty-seven".