18901036 has 48 divisors (see below), whose sum is σ = 41690880. Its totient is φ = 7283520.

The previous prime is 18901031. The next prime is 18901061. The reversal of 18901036 is 63010981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 18900995 and 18901013.

It is not an unprimeable number, because it can be changed into a prime (18901031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33291 + ... + 33853.

It is an arithmetic number, because the mean of its divisors is an integer number (868560).

Almost surely, 2^18901036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18901036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20845440).

18901036 is an abundant number, since it is smaller than the sum of its proper divisors (22789844).

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

18901036 is a wasteful number, since it uses less digits than its factorization.

18901036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 18901036 is about 4347.5321735440. The cubic root of 18901036 is about 266.3760674632.

It can be divided in two parts, 1890 and 1036, that added together give a triangular number (2926 = T₇₆).

The spelling of 18901036 in words is "eighteen million, nine hundred one thousand, thirty-six".