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1902 = 23317

1902 has 8 divisors (see below), whose sum is σ = 3816. Its totient is φ = 632.

The previous prime is 1901. The next prime is 1907. The reversal of 1902 is 2091.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1902 is an admirable number.

It is an Ulam number.

It is a plaindrome in base 8, base 11, base 12 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153 + ... + 164.

It is an arithmetic number, because the mean of its divisors is an integer number (477).

1902 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908).

1902 is a wasteful number, since it uses less digits than its factorization.

1902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1902 is about 43.6119249747. The cubic root of 1902 is about 12.3899676051.

Adding to 1902 its reverse (2091), we get a palindrome (3993).

It can be divided in two parts, 1 and 902, that added together give a triangular number (903 = T42).

The spelling of 1902 in words is "one thousand, nine hundred two".

Divisors: 1 2 3 6 317 634 951 1902