1915161 has 8 divisors (see below), whose sum is σ = 2568384. Its totient is φ = 1269360.

The previous prime is 1915153. The next prime is 1915163. The reversal of 1915161 is 1615191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1915161 - 2³ = 1915153 is a prime.

1915161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1915163) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1221 + ... + 2306.

It is an arithmetic number, because the mean of its divisors is an integer number (321048).

2^1915161 is an apocalyptic number.

It is an amenable number.

1915161 is a deficient number, since it is larger than the sum of its proper divisors (653223).

1915161 is a wasteful number, since it uses less digits than its factorization.

1915161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3711.

The product of its digits is 270, while the sum is 24.

The square root of 1915161 is about 1383.8934207518. The cubic root of 1915161 is about 124.1847964358.

The spelling of 1915161 in words is "one million, nine hundred fifteen thousand, one hundred sixty-one".