2138536369 has 16 divisors (see below), whose sum is σ = 2284184448. Its totient is φ = 1995165952.

The previous prime is 2138536319. The next prime is 2138536409. The reversal of 2138536369 is 9636358312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138536369 is a prime.

It is a super-2 number, since 2×2138536369² = 9146675603071408322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138536319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1325007 + ... + 1326619.

It is an arithmetic number, because the mean of its divisors is an integer number (142761528).

Almost surely, 2^2138536369 is an apocalyptic number.

It is an amenable number.

2138536369 is a deficient number, since it is larger than the sum of its proper divisors (145648079).

2138536369 is a wasteful number, since it uses less digits than its factorization.

2138536369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264.

The product of its digits is 699840, while the sum is 46.

The square root of 2138536369 is about 46244.3117475004. The cubic root of 2138536369 is about 1288.3648872391.

The spelling of 2138536369 in words is "two billion, one hundred thirty-eight million, five hundred thirty-six thousand, three hundred sixty-nine".