1150779779 has 2 divisors, whose sum is σ = 1150779780. Its totient is φ = 1150779778.

The previous prime is 1150779767. The next prime is 1150779797. The reversal of 1150779779 is 9779770511.

Together with next prime (1150779797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1150779779 - 2²⁴ = 1134002563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1150779779.

It is not a weakly prime, because it can be changed into another prime (1150779709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575389889 + 575389890.

It is an arithmetic number, because the mean of its divisors is an integer number (575389890).

Almost surely, 2^1150779779 is an apocalyptic number.

1150779779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1150779779 is an equidigital number, since it uses as much as digits as its factorization.

1150779779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972405, while the sum is 53.

The square root of 1150779779 is about 33923.1451814244. The cubic root of 1150779779 is about 1047.9263014988.

The spelling of 1150779779 in words is "one billion, one hundred fifty million, seven hundred seventy-nine thousand, seven hundred seventy-nine".