2038920857 has 8 divisors (see below), whose sum is σ = 2211513192. Its totient is φ = 1872179200.

The previous prime is 2038920841. The next prime is 2038920883. The reversal of 2038920857 is 7580298302.

It can be written as a sum of positive squares in 4 ways, for example, as 183982096 + 1854938761 = 13564^2 + 43069^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2038920857 - 2⁴ = 2038920841 is a prime.

It is a super-2 number, since 2×2038920857² = 8314396522219228898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2038920887) 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, 1461944 + ... + 1463337.

It is an arithmetic number, because the mean of its divisors is an integer number (276439149).

Almost surely, 2^2038920857 is an apocalyptic number.

It is an amenable number.

2038920857 is a deficient number, since it is larger than the sum of its proper divisors (172592335).

2038920857 is a wasteful number, since it uses less digits than its factorization.

2038920857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925339.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 2038920857 is about 45154.4112684464. The cubic root of 2038920857 is about 1268.0414677350.

The spelling of 2038920857 in words is "two billion, thirty-eight million, nine hundred twenty thousand, eight hundred fifty-seven".