1901066 has 16 divisors (see below), whose sum is σ = 2997000. Its totient is φ = 903168.

The previous prime is 1901033. The next prime is 1901087. The reversal of 1901066 is 6601091.

It can be written as a sum of positive squares in 4 ways, for example, as 1745041 + 156025 = 1321^2 + 395^2 .

It is a super-2 number, since 2×1901066² = 7228103872712, which contains 22 as substring.

It is a Curzon number.

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 in 7 ways as a sum of consecutive naturals, for example, 4010 + ... + 4458.

2^1901066 is an apocalyptic number.

1901066 is a deficient number, since it is larger than the sum of its proper divisors (1095934).

1901066 is a wasteful number, since it uses less digits than its factorization.

1901066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1901066 is about 1378.7914998287. The cubic root of 1901066 is about 123.8793919209.

The spelling of 1901066 in words is "one million, nine hundred one thousand, sixty-six".