18091962 has 48 divisors (see below), whose sum is σ = 45165120. Its totient is φ = 5126976.

The previous prime is 18091939. The next prime is 18091963. The reversal of 18091962 is 26919081.

It is not an unprimeable number, because it can be changed into a prime (18091963) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16998 + ... + 18030.

It is an arithmetic number, because the mean of its divisors is an integer number (940940).

Almost surely, 2^18091962 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18091962, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22582560).

18091962 is an abundant number, since it is smaller than the sum of its proper divisors (27073158).

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

18091962 is a wasteful number, since it uses less digits than its factorization.

18091962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1187 (or 1184 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 18091962 is about 4253.4647053902. The cubic root of 18091962 is about 262.5196937606.

The spelling of 18091962 in words is "eighteen million, ninety-one thousand, nine hundred sixty-two".