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1916939 is a prime number
BaseRepresentation
bin111010100000000001011
310121101112202
413110000023
5442320224
6105030415
722202513
oct7240013
93541482
101916939
11109a252
1278540b
135216ab
1437c843
1527ceae
hex1d400b

1916939 has 2 divisors, whose sum is σ = 1916940. Its totient is φ = 1916938.

The previous prime is 1916921. The next prime is 1916951. The reversal of 1916939 is 9396191.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1916939 - 212 = 1912843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1916909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 958469 + 958470.

It is an arithmetic number, because the mean of its divisors is an integer number (958470).

21916939 is an apocalyptic number.

1916939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1916939 is an equidigital number, since it uses as much as digits as its factorization.

1916939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13122, while the sum is 38.

The square root of 1916939 is about 1384.5356622348. The cubic root of 1916939 is about 124.2232148376.

The spelling of 1916939 in words is "one million, nine hundred sixteen thousand, nine hundred thirty-nine".