1950778 has 4 divisors (see below), whose sum is σ = 2926170. Its totient is φ = 975388.

The previous prime is 1950763. The next prime is 1950803. The reversal of 1950778 is 8770591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8770591 = 37 ⋅237043.

It can be written as a sum of positive squares in only one way, i.e., 1776889 + 173889 = 1333^2 + 417^2 .

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 as a sum of consecutive naturals, namely, 487693 + ... + 487696.

2^1950778 is an apocalyptic number.

1950778 is a deficient number, since it is larger than the sum of its proper divisors (975392).

1950778 is an equidigital number, since it uses as much as digits as its factorization.

1950778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975391.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 1950778 is about 1396.7025452830. The cubic root of 1950778 is about 124.9499105978.

The spelling of 1950778 in words is "one million, nine hundred fifty thousand, seven hundred seventy-eight".