1900648 has 8 divisors (see below), whose sum is σ = 3563730. Its totient is φ = 950320.

The previous prime is 1900621. The next prime is 1900667. The reversal of 1900648 is 8460091.

It can be written as a sum of positive squares in only one way, i.e., 1898884 + 1764 = 1378^2 + 42^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1900648² = 7224925639808, which contains 22 as substring.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118783 + ... + 118798.

2^1900648 is an apocalyptic number.

It is an amenable number.

1900648 is a deficient number, since it is larger than the sum of its proper divisors (1663082).

1900648 is a wasteful number, since it uses less digits than its factorization.

1900648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237587 (or 237583 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1900648 is about 1378.6399094760. The cubic root of 1900648 is about 123.8703118607.

The spelling of 1900648 in words is "one million, nine hundred thousand, six hundred forty-eight".