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92081131949 is a prime number
BaseRepresentation
bin101010111000001110…
…1101001000110101101
322210200021220011110102
41111300131221012231
53002040232210244
6110145042120445
76436566464432
oct1256035510655
9283607804412
1092081131949
1136062442354
1215a19950125
1388b6034cc1
144657475b89
1525dde1854e
hex15707691ad

92081131949 has 2 divisors, whose sum is σ = 92081131950. Its totient is φ = 92081131948.

The previous prime is 92081131889. The next prime is 92081131957. The reversal of 92081131949 is 94913118029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64206492100 + 27874639849 = 253390^2 + 166957^2 .

It is an emirp because it is prime and its reverse (94913118029) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-92081131949 is a prime.

It is a super-2 number, since 2×920811319492 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (92081131249) 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, 46040565974 + 46040565975.

It is an arithmetic number, because the mean of its divisors is an integer number (46040565975).

Almost surely, 292081131949 is an apocalyptic number.

It is an amenable number.

92081131949 is a deficient number, since it is larger than the sum of its proper divisors (1).

92081131949 is an equidigital number, since it uses as much as digits as its factorization.

92081131949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 92081131949 in words is "ninety-two billion, eighty-one million, one hundred thirty-one thousand, nine hundred forty-nine".