1047816877 has 2 divisors, whose sum is σ = 1047816878. Its totient is φ = 1047816876.

The previous prime is 1047816863. The next prime is 1047816907. The reversal of 1047816877 is 7786187401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1025216361 + 22600516 = 32019^2 + 4754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1047816877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1047816877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1047816857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523908438 + 523908439.

It is an arithmetic number, because the mean of its divisors is an integer number (523908439).

Almost surely, 2^1047816877 is an apocalyptic number.

It is an amenable number.

1047816877 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047816877 is an equidigital number, since it uses as much as digits as its factorization.

1047816877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 49.

The square root of 1047816877 is about 32369.9996447328. Note that the first 3 decimals coincide. The cubic root of 1047816877 is about 1015.6914495530.

The spelling of 1047816877 in words is "one billion, forty-seven million, eight hundred sixteen thousand, eight hundred seventy-seven".