18070494 has 48 divisors (see below), whose sum is σ = 39844224. Its totient is φ = 5460000.

The previous prime is 18070483. The next prime is 18070519. The reversal of 18070494 is 49407081.

It is a super-3 number, since 3×18070494³ (a number of 23 digits) contains 333 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71869 + ... + 72119.

It is an arithmetic number, because the mean of its divisors is an integer number (830088).

Almost surely, 2^18070494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18070494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19922112).

18070494 is an abundant number, since it is smaller than the sum of its proper divisors (21773730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18070494 is a wasteful number, since it uses less digits than its factorization.

18070494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 18070494 is about 4250.9403665542. The cubic root of 18070494 is about 262.4158169966.

The spelling of 18070494 in words is "eighteen million, seventy thousand, four hundred ninety-four".