1900946 has 4 divisors (see below), whose sum is σ = 2851422. Its totient is φ = 950472.

The previous prime is 1900937. The next prime is 1900981. The reversal of 1900946 is 6490091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6490091 = 1931 ⋅3361.

It can be written as a sum of positive squares in only one way, i.e., 1243225 + 657721 = 1115^2 + 811^2 .

It is a super-2 number, since 2×1900946² = 7227191389832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475235 + ... + 475238.

2^1900946 is an apocalyptic number.

1900946 is a deficient number, since it is larger than the sum of its proper divisors (950476).

1900946 is an equidigital number, since it uses as much as digits as its factorization.

1900946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950475.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1900946 is about 1378.7479827728. The cubic root of 1900946 is about 123.8767853413.

The spelling of 1900946 in words is "one million, nine hundred thousand, nine hundred forty-six".