203986945 has 8 divisors (see below), whose sum is σ = 257667840. Its totient is φ = 154600560.

The previous prime is 203986933. The next prime is 203987027. The reversal of 203986945 is 549689302.

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

It is not a de Polignac number, because 203986945 - 2¹¹ = 203984897 is a prime.

It is a super-2 number, since 2×203986945² = 83221347460866050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 203986895 and 203986904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073521 + ... + 1073710.

It is an arithmetic number, because the mean of its divisors is an integer number (32208480).

Almost surely, 2^203986945 is an apocalyptic number.

It is an amenable number.

203986945 is a deficient number, since it is larger than the sum of its proper divisors (53680895).

203986945 is a wasteful number, since it uses less digits than its factorization.

203986945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147255.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 203986945 is about 14282.3998333613. The cubic root of 203986945 is about 588.6639739497.

The spelling of 203986945 in words is "two hundred three million, nine hundred eighty-six thousand, nine hundred forty-five".