1900485 has 24 divisors (see below), whose sum is σ = 3327480. Its totient is φ = 1003392.

The previous prime is 1900463. The next prime is 1900487. The reversal of 1900485 is 5840091.

It can be written as a sum of positive squares in 4 ways, for example, as 4356 + 1896129 = 66^2 + 1377^2 .

It is not a de Polignac number, because 1900485 - 2¹⁵ = 1867717 is a prime.

It is a super-2 number, since 2×1900485² = 7223686470450, which contains 22 as substring.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900487) 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, 6931 + ... + 7199.

It is an arithmetic number, because the mean of its divisors is an integer number (138645).

2^1900485 is an apocalyptic number.

1900485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1900485 is a deficient number, since it is larger than the sum of its proper divisors (1426995).

1900485 is a wasteful number, since it uses less digits than its factorization.

1900485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 434 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1900485 is about 1378.5807919741. The cubic root of 1900485 is about 123.8667707108.

The spelling of 1900485 in words is "one million, nine hundred thousand, four hundred eighty-five".