1890540004 has 24 divisors (see below), whose sum is σ = 3373876800. Its totient is φ = 926724960.

The previous prime is 1890539983. The next prime is 1890540011. The reversal of 1890540004 is 4000450981.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32242 + ... + 69430.

It is an arithmetic number, because the mean of its divisors is an integer number (140578200).

Almost surely, 2^1890540004 is an apocalyptic number.

It is an amenable number.

1890540004 is a deficient number, since it is larger than the sum of its proper divisors (1483336796).

1890540004 is a wasteful number, since it uses less digits than its factorization.

1890540004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37443 (or 37441 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1890540004 is about 43480.3404310500. The cubic root of 1890540004 is about 1236.5033306106.

Adding to 1890540004 its reverse (4000450981), we get a palindrome (5890990985).

The spelling of 1890540004 in words is "one billion, eight hundred ninety million, five hundred forty thousand, four".