1913049 has 6 divisors (see below), whose sum is σ = 2763306. Its totient is φ = 1275360.

The previous prime is 1913047. The next prime is 1913063. The reversal of 1913049 is 9403191.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 8649 = 1380^2 + 93^2 .

It is not a de Polignac number, because 1913049 - 2¹ = 1913047 is a prime.

1913049 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1913047) 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 5 ways as a sum of consecutive naturals, for example, 106272 + ... + 106289.

It is an arithmetic number, because the mean of its divisors is an integer number (460551).

2^1913049 is an apocalyptic number.

It is an amenable number.

1913049 is a deficient number, since it is larger than the sum of its proper divisors (850257).

1913049 is a wasteful number, since it uses less digits than its factorization.

1913049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212567 (or 212564 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1913049 is about 1383.1301457202. The cubic root of 1913049 is about 124.1391301688.

It can be divided in two parts, 191 and 3049, that added together give a triangular number (3240 = T₈₀).

The spelling of 1913049 in words is "one million, nine hundred thirteen thousand, forty-nine".