Search a number
-
+
1952830405 = 51133456337
BaseRepresentation
bin111010001100101…
…1101001111000101
312001002121001201001
41310121131033011
512444411033110
6521435533301
766251533051
oct16431351705
95032531631
101952830405
1191235a429
12465bba231
13251770366
141474dac61
15b669663a
hex7465d3c5

1952830405 has 8 divisors (see below), whose sum is σ = 2364135192. Its totient is φ = 1548438528.

The previous prime is 1952830403. The next prime is 1952830447. The reversal of 1952830405 is 5040382591.

It can be written as a sum of positive squares in 4 ways, for example, as 7491169 + 1945339236 = 2737^2 + 44106^2 .

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 1952830405 - 21 = 1952830403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1952830403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1727604 + ... + 1728733.

It is an arithmetic number, because the mean of its divisors is an integer number (295516899).

Almost surely, 21952830405 is an apocalyptic number.

It is an amenable number.

1952830405 is a deficient number, since it is larger than the sum of its proper divisors (411304787).

1952830405 is a wasteful number, since it uses less digits than its factorization.

1952830405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456455.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1952830405 is about 44190.8407365146. The cubic root of 1952830405 is about 1249.9371499066.

The spelling of 1952830405 in words is "one billion, nine hundred fifty-two million, eight hundred thirty thousand, four hundred five".

Divisors: 1 5 113 565 3456337 17281685 390566081 1952830405