1900994 has 4 divisors (see below), whose sum is σ = 2851494. Its totient is φ = 950496.

The previous prime is 1900981. The next prime is 1901021. The reversal of 1900994 is 4990091.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1525225 + 375769 = 1235^2 + 613^2 .

It is a super-2 number, since 2×1900994² = 7227556376072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1900994.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475247 + ... + 475250.

2^1900994 is an apocalyptic number.

1900994 is a deficient number, since it is larger than the sum of its proper divisors (950500).

1900994 is an equidigital number, since it uses as much as digits as its factorization.

1900994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950499.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 1900994 is about 1378.7653897600. The cubic root of 1900994 is about 123.8778279863.

The spelling of 1900994 in words is "one million, nine hundred thousand, nine hundred ninety-four".