1338678495 has 192 divisors, whose sum is σ = 3082060800. Its totient is φ = 541209600.

The previous prime is 1338678491. The next prime is 1338678521. The reversal of 1338678495 is 5948768331.

1338678495 is a `hidden beast` number, since 1 + 3 + 3 + 86 + 78 + 495 = 666.

It is not a de Polignac number, because 1338678495 - 2² = 1338678491 is a prime.

It is a super-2 number, since 2×1338678495² = 3584120225950930050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338678491) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3835581 + ... + 3835929.

It is an arithmetic number, because the mean of its divisors is an integer number (16052400).

Almost surely, 2^1338678495 is an apocalyptic number.

1338678495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1338678495 is an abundant number, since it is smaller than the sum of its proper divisors (1743382305).

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

1338678495 is a wasteful number, since it uses less digits than its factorization.

1338678495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 416 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1338678495 is about 36587.9556001698. The cubic root of 1338678495 is about 1102.1112331904. Note that the first 3 decimals are identical.

The spelling of 1338678495 in words is "one billion, three hundred thirty-eight million, six hundred seventy-eight thousand, four hundred ninety-five".