2138908454 has 8 divisors (see below), whose sum is σ = 3210621600. Its totient is φ = 1068701256.

The previous prime is 2138908433. The next prime is 2138908463. The reversal of 2138908454 is 4548098312.

It is a happy number.

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

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, 372929 + ... + 378620.

It is an arithmetic number, because the mean of its divisors is an integer number (401327700).

Almost surely, 2^2138908454 is an apocalyptic number.

2138908454 is a deficient number, since it is larger than the sum of its proper divisors (1071713146).

2138908454 is a wasteful number, since it uses less digits than its factorization.

2138908454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752974.

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 2138908454 is about 46248.3346078537. The cubic root of 2138908454 is about 1288.4396039872.

The spelling of 2138908454 in words is "two billion, one hundred thirty-eight million, nine hundred eight thousand, four hundred fifty-four".