1405136077 has 2 divisors, whose sum is σ = 1405136078. Its totient is φ = 1405136076.

The previous prime is 1405136063. The next prime is 1405136081. The reversal of 1405136077 is 7706315041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1077743241 + 327392836 = 32829^2 + 18094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1405136077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1405136977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702568038 + 702568039.

It is an arithmetic number, because the mean of its divisors is an integer number (702568039).

Almost surely, 2^1405136077 is an apocalyptic number.

It is an amenable number.

1405136077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405136077 is an equidigital number, since it uses as much as digits as its factorization.

1405136077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 1405136077 is about 37485.1447509543. The cubic root of 1405136077 is about 1120.0552898407.

The spelling of 1405136077 in words is "one billion, four hundred five million, one hundred thirty-six thousand, seventy-seven".