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2111621429 is a prime number
BaseRepresentation
bin111110111011100…
…1100100100110101
312110011101111001002
41331313030210311
513311033341204
6545311213045
7103220325461
oct17567144465
95404344032
102111621429
11993a56485
124ab217185
13278629748
141606334a1
15c55b091e
hex7ddcc935

2111621429 has 2 divisors, whose sum is σ = 2111621430. Its totient is φ = 2111621428.

The previous prime is 2111621377. The next prime is 2111621497. The reversal of 2111621429 is 9241261112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1476480625 + 635140804 = 38425^2 + 25202^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111621429 - 28 = 2111621173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111621129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055810714 + 1055810715.

It is an arithmetic number, because the mean of its divisors is an integer number (1055810715).

Almost surely, 22111621429 is an apocalyptic number.

It is an amenable number.

2111621429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111621429 is an equidigital number, since it uses as much as digits as its factorization.

2111621429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 2111621429 is about 45952.3821906982. The cubic root of 2111621429 is about 1282.9370683595.

The spelling of 2111621429 in words is "two billion, one hundred eleven million, six hundred twenty-one thousand, four hundred twenty-nine".