1950990 has 16 divisors (see below), whose sum is σ = 4682448. Its totient is φ = 520256.

The previous prime is 1950989. The next prime is 1951003. The reversal of 1950990 is 990591.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32487 + ... + 32546.

It is an arithmetic number, because the mean of its divisors is an integer number (292653).

2^1950990 is an apocalyptic number.

1950990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1950990 is an abundant number, since it is smaller than the sum of its proper divisors (2731458).

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

1950990 is a wasteful number, since it uses less digits than its factorization.

1950990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65043.

The product of its (nonzero) digits is 3645, while the sum is 33.

The square root of 1950990 is about 1396.7784362597. The cubic root of 1950990 is about 124.9544367273.

The spelling of 1950990 in words is "one million, nine hundred fifty thousand, nine hundred ninety".