2138157693 has 12 divisors (see below), whose sum is σ = 3529657248. Its totient is φ = 1221804360.

The previous prime is 2138157653. The next prime is 2138157743. The reversal of 2138157693 is 3967518312.

It is not a de Polignac number, because 2138157693 - 2²⁴ = 2121380477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138157653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16969443 + ... + 16969568.

It is an arithmetic number, because the mean of its divisors is an integer number (294138104).

Almost surely, 2^2138157693 is an apocalyptic number.

It is an amenable number.

2138157693 is a deficient number, since it is larger than the sum of its proper divisors (1391499555).

2138157693 is a wasteful number, since it uses less digits than its factorization.

2138157693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33939024 (or 33939021 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 2138157693 is about 46240.2172680882. The cubic root of 2138157693 is about 1288.2888380826.

The spelling of 2138157693 in words is "two billion, one hundred thirty-eight million, one hundred fifty-seven thousand, six hundred ninety-three".