18258070 has 16 divisors (see below), whose sum is σ = 33925248. Its totient is φ = 7067520.

The previous prime is 18258059. The next prime is 18258109. The reversal of 18258070 is 7085281.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29139 + ... + 29758.

It is an arithmetic number, because the mean of its divisors is an integer number (2120328).

Almost surely, 2^18258070 is an apocalyptic number.

18258070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18258070 is a deficient number, since it is larger than the sum of its proper divisors (15667178).

18258070 is a wasteful number, since it uses less digits than its factorization.

18258070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58935.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 18258070 is about 4272.9462903247. The cubic root of 18258070 is about 263.3206727165.

The spelling of 18258070 in words is "eighteen million, two hundred fifty-eight thousand, seventy".