338154561 has 32 divisors (see below), whose sum is σ = 513492480. Its totient is φ = 219870288.

The previous prime is 338154559. The next prime is 338154569. The reversal of 338154561 is 165451833.

338154561 is a `hidden beast` number, since 33 + 81 + 545 + 6 + 1 = 666.

It is not a de Polignac number, because 338154561 - 2¹ = 338154559 is a prime.

It is a super-2 number, since 2×338154561² = 228697014250205442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (338154569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192690 + ... + 194436.

It is an arithmetic number, because the mean of its divisors is an integer number (16046640).

Almost surely, 2^338154561 is an apocalyptic number.

It is an amenable number.

338154561 is a deficient number, since it is larger than the sum of its proper divisors (175337919).

338154561 is a wasteful number, since it uses less digits than its factorization.

338154561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930 (or 1924 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 338154561 is about 18388.9793354607. The cubic root of 338154561 is about 696.6881385241.

The spelling of 338154561 in words is "three hundred thirty-eight million, one hundred fifty-four thousand, five hundred sixty-one".