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1869413 = 71320543
BaseRepresentation
bin111001000011001100101
310111222100112
413020121211
5434310123
6104022405
721614120
oct7103145
93458315
101869413
111067577
12761a05
13505b80
143693b7
1526dd78
hex1c8665

1869413 has 8 divisors (see below), whose sum is σ = 2300928. Its totient is φ = 1479024.

The previous prime is 1869407. The next prime is 1869419. The reversal of 1869413 is 3149681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1869407) and next prime (1869419).

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

It is a cyclic number.

It is not a de Polignac number, because 1869413 - 220 = 820837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1869413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1869419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10181 + ... + 10362.

It is an arithmetic number, because the mean of its divisors is an integer number (287616).

21869413 is an apocalyptic number.

1869413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1869413 is a deficient number, since it is larger than the sum of its proper divisors (431515).

1869413 is a wasteful number, since it uses less digits than its factorization.

1869413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20563.

The product of its digits is 5184, while the sum is 32.

The square root of 1869413 is about 1367.2647878154. The cubic root of 1869413 is about 123.1880042925.

The spelling of 1869413 in words is "one million, eight hundred sixty-nine thousand, four hundred thirteen".

Divisors: 1 7 13 91 20543 143801 267059 1869413