1041878729 has 2 divisors, whose sum is σ = 1041878730. Its totient is φ = 1041878728.

The previous prime is 1041878723. The next prime is 1041878749. The reversal of 1041878729 is 9278781401.

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., 997296400 + 44582329 = 31580^2 + 6677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1041878729 is a prime.

It is a super-2 number, since 2×1041878729² = 2171022571885310882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1041878723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520939364 + 520939365.

It is an arithmetic number, because the mean of its divisors is an integer number (520939365).

Almost surely, 2^1041878729 is an apocalyptic number.

It is an amenable number.

1041878729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1041878729 is an equidigital number, since it uses as much as digits as its factorization.

1041878729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 1041878729 is about 32278.1463067506. The cubic root of 1041878729 is about 1013.7691175785.

The spelling of 1041878729 in words is "one billion, forty-one million, eight hundred seventy-eight thousand, seven hundred twenty-nine".