1901163 has 16 divisors (see below), whose sum is σ = 2820096. Its totient is φ = 1129440.

The previous prime is 1901147. The next prime is 1901177. The reversal of 1901163 is 3611091.

It is a happy number.

It is not a de Polignac number, because 1901163 - 2⁴ = 1901147 is a prime.

It is a super-2 number, since 2×1901163² = 7228841505138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1901363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206 + ... + 2292.

It is an arithmetic number, because the mean of its divisors is an integer number (176256).

2^1901163 is an apocalyptic number.

1901163 is a deficient number, since it is larger than the sum of its proper divisors (918933).

1901163 is a wasteful number, since it uses less digits than its factorization.

1901163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1901163 is about 1378.8266751119. The cubic root of 1901163 is about 123.8814988260.

The spelling of 1901163 in words is "one million, nine hundred one thousand, one hundred sixty-three".