18042465 has 64 divisors (see below), whose sum is σ = 35684352. Its totient is φ = 7603200.

The previous prime is 18042463. The next prime is 18042469. The reversal of 18042465 is 56424081.

18042465 = T₂₁₁ + T₂₁₂ + ... + T₄₈₉.

It is not a de Polignac number, because 18042465 - 2¹ = 18042463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18042463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74745 + ... + 74985.

It is an arithmetic number, because the mean of its divisors is an integer number (557568).

Almost surely, 2^18042465 is an apocalyptic number.

18042465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18042465 is a deficient number, since it is larger than the sum of its proper divisors (17641887).

18042465 is a wasteful number, since it uses less digits than its factorization.

18042465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 18042465 is about 4247.6422871989. The cubic root of 18042465 is about 262.2800697557.

The spelling of 18042465 in words is "eighteen million, forty-two thousand, four hundred sixty-five".