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1139195779 is a prime number
BaseRepresentation
bin100001111100110…
…1011111110000011
32221101121010211021
41003321223332003
54313113231104
6305012530311
740142001331
oct10371537603
92841533737
101139195779
11535056717
12279620997
13152025457
14ab422b51
156a029754
hex43e6bf83

1139195779 has 2 divisors, whose sum is σ = 1139195780. Its totient is φ = 1139195778.

The previous prime is 1139195747. The next prime is 1139195797. The reversal of 1139195779 is 9775919311.

Together with next prime (1139195797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1139195779 - 25 = 1139195747 is a prime.

It is a pancake number, because a pancake can be divided into 1139195779 parts by 47732 straight cuts.

It is not a weakly prime, because it can be changed into another prime (1139195579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569597889 + 569597890.

It is an arithmetic number, because the mean of its divisors is an integer number (569597890).

Almost surely, 21139195779 is an apocalyptic number.

1139195779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1139195779 is an equidigital number, since it uses as much as digits as its factorization.

1139195779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 535815, while the sum is 52.

The square root of 1139195779 is about 33751.9744459491. The cubic root of 1139195779 is about 1044.3982185714.

The spelling of 1139195779 in words is "one billion, one hundred thirty-nine million, one hundred ninety-five thousand, seven hundred seventy-nine".