2138769123 has 8 divisors (see below), whose sum is σ = 2853009600. Its totient is φ = 1425187368.

The previous prime is 2138769121. The next prime is 2138769161. The reversal of 2138769123 is 3219678312.

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

It is not a de Polignac number, because 2138769123 - 2¹ = 2138769121 is a prime.

It is a super-2 number, since 2×2138769123² = 9148666722996378258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2138769121) 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, 157053 + ... + 170126.

It is an arithmetic number, because the mean of its divisors is an integer number (356626200).

Almost surely, 2^2138769123 is an apocalyptic number.

2138769123 is a deficient number, since it is larger than the sum of its proper divisors (714240477).

2138769123 is a wasteful number, since it uses less digits than its factorization.

2138769123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329361.

The product of its digits is 108864, while the sum is 42.

The square root of 2138769123 is about 46246.8282479999. The cubic root of 2138769123 is about 1288.4116265584.

The spelling of 2138769123 in words is "two billion, one hundred thirty-eight million, seven hundred sixty-nine thousand, one hundred twenty-three".